Novel substituted bicyclic heterocyclic compounds as gamma secretase modulators

ABSTRACT

The present invention is concerned with substituted bicyclic heterocyclic compounds of Formula (I) 
     
       
         
         
             
             
         
       
     
     wherein Het 1 , Het 2 , A 1 , A 2 , A 3  and A 4  have the meaning defined in the claims. The compounds according to the present invention are useful as gamma secretase modulators. The invention further relates to processes for preparing such novel compounds, pharmaceutical compositions comprising said compounds as an active ingredient as well as the use of said compounds as a medicament.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. Ser. No. 13/144,554 (nowallowed), which was filed on Jul. 4, 2011 as a national stageapplication of Patent Application No. PCT/EP2010/051244, filed Feb. 2,2010, which in turn claims the benefit of EPO Patent Application No.09152254.0 filed Feb. 6, 2009. The complete disclosures of theaforementioned related patent applications are hereby incorporatedherein by reference for all purposes.

FIELD OF THE INVENTION

The present invention is concerned with novel substituted bicyclicheterocyclic compounds useful as gamma secretase modulators. Theinvention further relates to processes for preparing such novelcompounds, pharmaceutical compositions comprising said compounds as anactive ingredient as well as the use of said compounds as a medicament.

BACKGROUND OF THE INVENTION

Alzheimer's Disease (AD) is a progressive neurodegenerative disordermarked by loss of memory, cognition, and behavioral stability. ADafflicts 6-10% of the population over age 65 and up to 50% over age 85.It is the leading cause of dementia and the third leading cause of deathafter cardiovascular disease and cancer. There is currently no effectivetreatment for AD. The total net cost related to AD in the U.S. exceeds$100 billion annually.

AD does not have a simple etiology, however, it has been associated withcertain risk factors including (1) age, (2) family history and (3) headtrauma; other factors include environmental toxins and low levels ofeducation. Specific neuropathological lesions in the limbic and cerebralcortices include intracellular neurofibrillary tangles consisting ofhyperphosphorylated tau protein and the extracellular deposition offibrillar aggregates of amyloid beta peptides (amyloid plaques). Themajor component of amyloid plaques are the amyloid beta (A-beta, Abetaor Aβ) peptides of various lengths. A variant thereof, which is theAβ1-42-peptide (Abeta-42), is believed to be the major causative agentfor amyloid formation. Another variant is the Aβ1-40-peptide (Abeta-40).Amyloid beta is the proteolytic product of a precursor protein, betaamyloid precursor protein (beta-APP or APP).

Familial, early onset autosomal dominant forms of AD have been linked tomissense mutations in the β-amyloid precursor protein (β-APP or APP) andin the presenilin proteins 1 and 2. In some patients, late onset formsof AD have been correlated with a specific allele of the apolipoproteinE (ApoE) gene, and, more recently, the finding of a mutation inalpha2-macroglobulin, which may be linked to at least 30% of the ADpopulation. Despite this heterogeneity, all forms of AD exhibit similarpathological findings. Genetic analysis has provided the best clues fora logical therapeutic approach to AD. All mutations found to date,affect the quantitative or qualitative production of the amyloidogenicpeptides known as Abeta-peptides (Aβ), specifically Aβ42, and have givenstrong support to the “amyloid cascade hypothesis” of AD (Tanzi andBertram, 2005, Cell 120, 545). The likely link between Aβ peptidegeneration and AD pathology emphasizes the need for a betterunderstanding of the mechanisms of Aβ production and strongly warrants atherapeutic approach at modulating Aβ levels.

The release of Aβ peptides is modulated by at least two proteolyticactivities referred to as β- and γ-secretase cleavage at the N-terminus(Met-Asp bond) and the C-terminus (residues 37-42) of the Aβ peptide,respectively. In the secretory pathway, there is evidence thatβ-secretase cleaves first, leading to the secretion of s-APPβ (sβ) andthe retention of a 11 kDa membrane-bound carboxy terminal fragment(CTF). The latter is believed to give rise to Aβ peptides followingcleavage by γ-secretase. The amount of the longer isoform, Aβ42, isselectively increased in patients carrying certain mutations in aparticular protein (presenilin), and these mutations have beencorrelated with early-onset familial Alzheimer's disease. Therefore,Aβ42 is believed by many researchers to be the main culprit of thepathogenesis of Alzheimer's disease.

It has now become clear that the γ-secretase activity cannot be ascribedto a single protein, but is in fact associated with an assembly ofdifferent proteins.

The gamma (γ)-secretase activity resides within a multiprotein complexcontaining at least four components: the presenilin (PS) heterodimer,nicastrin, aph-1 and pen-2. The PS heterodimer consists of the amino-and carboxyterminal PS fragments generated by endoproteolysis of theprecursor protein. The two aspartates of the catalytic site are at theinterface of this heterodimer. It has recently been suggested thatnicastrin serves as a gamma-secretase-substrate receptor. The functionsof the other members of gamma-secretase are unknown, but they are allrequired for activity (Steiner, 2004. Curr. Alzheimer Research 1(3):175-181).

Thus, although the molecular mechanism of the second cleavage-step hasremained elusive until now, the γ-secretase-complex has become one ofthe prime targets in the search for compounds for the treatment ofAlzheimer's disease.

Various strategies have been proposed for targeting gamma-secretase inAlzheimer's disease, ranging from targeting the catalytic site directly,developing substrate-specific inhibitors and modulators ofgamma-secretase activity (Marjaux et al., 2004. Drug Discovery Today:Therapeutic Strategies, Volume 1, 1-6). Accordingly, a variety ofcompounds were described that have secretases as targets (Lamer, 2004.Secretases as therapeutics targets in Alzheimer's disease: patents2000-2004. Expert Opin. Ther. Patents 14, 1403-1420).

Indeed, this finding was recently supported by biochemical studies inwhich an effect of certain NSAIDs on γ-secretase was shown (Weggen et al(2001) Nature 414, 6860, 212 and WO 01/78721 and US 2002/0128319;Morihara et al (2002) J. Neurochem. 83, 1009; Eriksen (2003) J. Clin.Invest. 112, 440). Potential limitations for the use of NSAIDs toprevent or treat AD are their inhibition activity of COX enzymes, whichcan lead to unwanted side effects, and their low CNS penetration(Peretto et al., 2005, J. Med. Chem. 48, 5705-5720).

WO-2008/137139 relates to heterocyclic derivatives and their use asgamma secretase modulators.

WO-2005/115990 discloses cinnamide compounds that are useful for thetreatment of neurodegenerative diseases caused by amyloid β proteinssuch as Alzheimer's disease, senile dementia, Down's syndrome andamyloidosis.

WO-2004/110350 relates to aryl compounds and their use in modulatingamyloid 13.

WO-2007/131991 discloses imidazopyrazine compounds as MAPKAPK5inhibitors useful for the treatment of degenerative and inflammatorydiseases.

WO-2004/017963 relates to benzimidazoles as coagulation factor Xainhibitors for the treatment of thromboembolic illnesses.

There is a strong need for novel compounds which modulate γ-secretaseactivity thereby opening new avenues for the treatment of Alzheimer'sdisease. It is an object of the present invention to overcome orameliorate at least one of the disadvantages of the prior art, or toprovide a useful alternative. It is accordingly an object of the presentinvention to provide such novel compounds.

SUMMARY OF THE INVENTION

It has been found that the compounds of the present invention are usefulas gamma secretase modulators. The compounds according to the inventionand the pharmaceutically acceptable compositions thereof, may be usefulin the treatment or prevention of Alzheimer's disease.

The present invention concerns novel compounds of Formula (I):

and stereoisomeric forms thereof, whereinHet¹ is a 5-membered or 6-membered aromatic heterocycle,having formula (a-1), (a-2), (a-3), (a-4) or (a-5):

R⁰ is H or C₁₋₄alkyl;R¹ is H, C₁₋₄alkyl or C₁₋₄allyloxyC₁₋₄alkyl;R² is C₁₋₄alkyl;

X is O or S; G¹ is CH or N;

G² is CH, N or C substituted with C₁₋₄alkyl;provided that G¹ and G² are not simultaneously N;

G³ is CH or N;

R^(10a) and R^(10b) each independently are hydrogen or C₁₋₄alkyl;A¹ is CR³ or N; wherein R³ is H, halo or C₁₋₄allyloxy;A², A³ and A⁴ each independently are CH, CF or N; provided that maximumtwo of A¹,

A², A³ and A⁴ are N;

Het² is a 9-membered bicyclic aromatic heterocycle,having formula (b-1) or (b-2):

Z¹ is CH or N; Z² is CR^(4a) or N;

Z³ is CH or N; provided that maximum one of Z¹, Z² and Z³ is N;

Y¹ is CH or N; Y² is CR^(4b) or N;

Y³ is CH or N; provided that maximum one of Y¹, Y² and Y³ is N;R^(4a) is H; halo; C₁₋₄alkyloxy; cyano; cycloC₃₋₇alkyl;C₁₋₄alkylcarbonyl;C₁₋₄alkyloxycarbonyl; or C₁₋₄alkyl optionally substituted with one ormore substituents each independently selected from the group consistingof halo and amino;R⁵ is H; H halo; C₁₋₄alkyloxy; cyano; cycloC₃₋₇alkyl; or C₁₋₄alkyloptionally substituted with one or more substituents each independentlyselected from the group consisting of halo and amino;R⁵ is H; halo; cyano; C₁₋₄alkyloxy; C₂₋₆alkenyl; or C₁₋₆alkyl optionallysubstituted with one or more substituents each independently selectedfrom the group consisting of C₁₋₄alkyloxy and halo;R^(6a) is C₂₋₆alkyl substituted with one or more halo substituents;C₁₋₆alkyl optionally substituted with one or more substituents eachindependently selected from the group consisting of piperidinyl, Ar,C₁₋₆alkyloxy, tetrahydropyranyl, cycloC₃₋₇alkyloxy, and cycloC₃₋₇alkyl;cycloC₃₋₇alkyl; C₁₋₄alkylcarbonyl; tetrahydropyranyl; Ar;R⁸R⁹N-carbonyl; or CH₂—O—Ar;R^(6b) is C₂₋₆alkyl substituted with one or more halo substituents;C₁₋₆alkyl optionally substituted with one or more substituents eachindependently selected from the group consisting of piperidinyl, Ar,C₁₋₆alkyloxy, tetrahydropyranyl, cycloC₃₋₇alkyloxy, and cycloC₃₋₇alkyl;cycloC₃₋₇alkyl; cycloC₃₋₇alkyl substituted with one or more phenylsubstituents optionally substituted with one or more halo substituents;piperidinyl; morpholinyl; pyrrolidinyl; NR⁸R⁹; tetrahydropyranyl; O—Ar;C₁₋₆alkyloxy;C₁₋₆alkylthio; Ar; CH₂—O—Ar; S—Ar; NCH₃—Ar; or NH—Ar; wherein eachpiperidinyl, morpholinyl, and pyrrolidinyl may optionally be substitutedwith one or more substituents each independently selected from the groupconsisting of C₁₋₄alkyl, C₂₋₆alkenyl, C₁₋₄alkylcarbonyl, halo, andC₁₋₄alkyloxycarbonyl;wherein each Ar independently is phenyl optionally substituted with oneor more substituents each independently selected from the groupconsisting of halo, C₁₋₄alkyloxy, cyano, NR⁸R⁹, morpholinyl, C₁₋₄alkyl,and C₁₋₄alkyl substituted with one or more halo substituents; pyridinyloptionally substituted with one or more substituents each independentlyselected from the group consisting of halo, C₁₋₄ alkyloxy, cyano,C₁₋₄alkyl, and C₁₋₄alkyl substituted with one or more halo substituents;oxazolyl optionally substituted with one or more C₁₋₄alkyl substituents;or thienyl optionally substituted with one or more halo substituents;each R⁸ independently is H or C₁₋₄alkyl;each R⁹ independently is H or C₁₋₄alkyl;R⁷ is H, C₁₋₆alkyl optionally substituted with one or more substituentseach independently selected from the group consisting of halo, phenyl,and C₁₋₄alkyloxy; and the pharmaceutically acceptable addition salts,and the solvates thereof.

The present invention also concerns methods for the preparation ofcompounds of Formula (I) and pharmaceutical compositions comprisingthem.

The present compounds surprisingly were found to modulate theγ-secretase activity in vitro and in vivo, and are therefore useful inthe treatment or prevention of Alzheimer's disease (AD), traumatic braininjury, mild cognitive impairment (MCI), senility, dementia, dementiawith Lewy bodies, cerebral amyloid angiopathy, multi-infarct dementia,Down's syndrome, dementia associated with Parkinson's disease anddementia associated with beta-amyloid, preferably Alzheimer's diseaseand other disorders with Beta-amyloid pathology (e.g. glaucoma).

In view of the aforementioned pharmacology of the compounds of Formula(I), it follows that they are suitable for use as a medicament.

More especially the compounds are suitable in the treatment orprevention of Alzheimer's disease, cerebral amyloid angiopathy,multi-infarct dementia, dementia pugilistica or Down syndrome.

The present invention also concerns to the use of a compound accordingto the general Formula (I), the stereoisomeric forms thereof and thepharmaceutically acceptable acid or base addition salts and the solvatesthereof, for the manufacture of a medicament for the modulation ofγ-secretase activity.

Use of a compound of Formula (I) for the modulation of γ-secretaseactivity resulting in a decrease in the relative amount of Aβ42-peptidesproduced are preferred.

One advantage of the compounds or a part of the compounds of the presentinvention may lie in their enhanced CNS-penetration.

The present invention will now be further described. In the followingpassages, different aspects of the invention are defined in more detail.Each aspect so defined may be combined with any other aspect or aspectsunless clearly indicated to the contrary. In particular, any featureindicated as being preferred or advantageous may be combined with anyother feature or features indicated as being preferred or advantageous.

DETAILED DESCRIPTION

When describing the compounds of the invention, the terms used are to beconstrued in accordance with the following definitions, unless a contextdictates otherwise.

When indicating the number of substituents, the term “one or more” meansfrom one substituent to the highest possible number of substitution,i.e. replacement of one hydrogen up to replacement of all hydrogens bysubstituents each individually selected from the indicated groups,provided that the normal valency is not exceeded, and that thesubstitution results in a chemically stable compound, i.e. a compoundthat is sufficiently robust to survive isolation to a useful degree ofpurity from a reaction mixture, and formulation into a therapeuticagent. Thereby, one, two, three or four substituents are preferred. Inparticular one, two or three substitutents are preferred. More inparticular one substituent is preferred.

The term “halo”, “Halo” or “halogen” as a group or part of a group isgeneric for fluoro, chloro, bromo, iodo unless otherwise is indicated.

The term “C₁₋₆alkyl” as a group or part of a group refers to ahydrocarbyl radical of Formula C_(n)H_(2n+1) wherein n is a numberranging from 1 to 6. C₁₋₆alkyl groups comprise from 1 to 6 carbon atoms,in particular from 1 to 4 carbon atoms, more in particular from 1 to 3carbon atoms, still more in particular 1 to 2 carbon atoms. Alkyl groupsmay be linear or branched and may be substituted as indicated herein.When a subscript is used herein following a carbon atom, the subscriptrefers to the number of carbon atoms that the named group may contain.Thus, for example, C₁₋₆alkyl includes all linear, or branched alkylgroups with between 1 and 6 carbon atoms, and thus includes such as forexample methyl, ethyl, n-propyl, i-propyl, 2-methyl-ethyl, butyl and itsisomers (e.g. n-butyl, isobutyl and tert-butyl), pentyl and its isomers,hexyl and its isomers, and the like.

The term “C₂₋₆alkyl” as a group or part of a group refers to ahydrocarbyl radical of Formula C_(n)H_(2n+1) wherein n is a numberranging from 2 to 6. C₂₋₆alkyl groups comprise from 2 to 6 carbon atoms,in particular from 2 to 4 carbon atoms, more in particular from 2 to 3carbon atoms. Alkyl groups may be linear or branched and may besubstituted as indicated herein. When a subscript is used hereinfollowing a carbon atom, the subscript refers to the number of carbonatoms that the named group may contain. Thus, for example, C₂₋₆alkylincludes all linear, or branched alkyl groups with between 2 and 6carbon atoms, and thus includes such as for example ethyl, n-propyl,i-propyl, 2-methyl-ethyl, butyl and its isomers (e.g. n-butyl, isobutyland tert-butyl), pentyl and its isomers, hexyl and its isomers, and thelike.

The term “C₁₋₄alkyl” as a group or part of a group refers to ahydrocarbyl radical of Formula C_(n)H_(2n+1) wherein n is a numberranging from 1 to 4. C₁₋₄alkyl groups comprise from 1 to 4 carbon atoms,in particular from 1 to 3 carbon atoms, more in particular 1 to 2 carbonatoms. Alkyl groups may be linear or branched and may be substituted asindicated herein. When a subscript is used herein following a carbonatom, the subscript refers to the number of carbon atoms that the namedgroup may contain. Thus, for example, C₁₋₄alkyl includes all linear, orbranched alkyl groups with between 1 and 4 carbon atoms, and thusincludes such as for example methyl, ethyl, n-propyl, i-propyl,2-methyl-ethyl, butyl and its isomers (e.g. n-butyl, isobutyl andten-butyl), and the like.

The term “C₁₋₆alkyloxy” as a group or part of a group refers to aradical having the Formula OR^(b) wherein R^(b) is C₁₋₆alkyl.Non-limiting examples of suitable C₁₋₆ alkyloxy include methyloxy,ethyloxy, propyloxy, isopropyloxy, butyloxy, isobutyloxy, sec-butyloxy,tert-butyloxy, pentyloxy, and hexyloxy.

The term “C₁₋₄alkyloxy” as a group or part of a group refers to aradical having the Formula OR^(b) wherein R^(b) is C₁₋₄alkyl.Non-limiting examples of suitable C₁₋₄alkyloxy include methyloxy,ethyloxy, propyloxy, isopropyloxy, butyloxy, isobutyloxy, sec-butyloxyand tert-butyloxy.

In the framework of this application, C₂₋₆alkenyl is a straight orbranched hydrocarbon radical having from 2 to 6 carbon atoms containinga double bond such as ethenyl, propenyl, butenyl, pentenyl,1-propen-2-yl, hexenyl and the like.

The term “cycloC₃₋₇alkyl” alone or in combination, refers to a cyclicsaturated hydrocarbon radical having from 3 to 7 carbon atoms.Non-limiting examples of suitable cycloC₃₋₇alkyl include cyclopropyl,cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl.

The term “cycloC₃₋₇alkyloxy” alone or in combination, refers to aradical having the Formula OR^(d), wherein R^(d) is cycloC₃₋₇alkyl.Non-limiting examples of suitable cycloC₃₋₇alkyloxy includecyclopropyloxy, cyclobutyloxy, cyclopentyloxy, cyclohexyloxy andcycloheptyloxy.

The chemical names of the compounds of the present invention weregenerated according to the nomenclature rules agreed upon by theChemical Abstracts Service.

In case of tautomeric forms, it should be clear that the othernon-depicted tautomeric form is also included within the scope of thepresent invention.

When any variable occurs more than one time in any constituent, eachdefinition is independent.

It will be appreciated that some of the compounds of Formula (I) andtheir pharmaceutically acceptable addition salts and stereoisomericforms may contain one or more centers of chirality and exist asstereoisomeric forms.

The term “stereoisomeric forms” as used hereinbefore defines all thepossible isomeric forms that the compounds of Formula (I) may possess.Unless otherwise mentioned or indicated, the chemical designation ofcompounds denotes the mixture of all possible stereochemically isomericforms More in particular, stereogenic centers may have the R- orS-configuration; substituents on bivalent cyclic (partially) saturatedradicals may have either the cis- or trans-configuration. Compoundsencompassing double bonds can have an E or Z-stereochemistry at saiddouble bond. Stereoisomeric forms of the compounds of Formula (I) areembraced within the scope of this invention.

When a specific stereoisomeric form is indicated, this means that saidform is substantially free, i.e. associated with less than 50%,preferably less than 20%, more preferably less than 10%, even morepreferably less than 5%, further preferably less than 2% and mostpreferably less than 1% of the other isomer(s).

When a specific regioisomeric form is indicated, this means that saidform is substantially free, i.e. associated with less than 50%,preferably less than 20%, more preferably less than 10%, even morepreferably less than 5%, further preferably less than 2% and mostpreferably less than 1% of the other isomer(s).

For therapeutic use, salts of the compounds of Formula (I) are thosewherein the counterion is pharmaceutically acceptable. However, salts ofacids and bases which are non-pharmaceutically acceptable may also finduse, for example, in the preparation or purification of apharmaceutically acceptable compound. All salts, whetherpharmaceutically acceptable or not, are included within the ambit of thepresent invention.

The pharmaceutically acceptable acid and base addition salts asmentioned hereinabove or hereinafter are meant to comprise thetherapeutically active non-toxic acid and base addition salt forms whichthe compounds of Formula (I) are able to form. The pharmaceuticallyacceptable acid addition salts can conveniently be obtained by treatingthe base form with such appropriate acid. Appropriate acids comprise,for example, inorganic acids such as hydrohalic acids, e.g. hydrochloricor hydrobromic acid, sulfuric, nitric, phosphoric and the like acids; ororganic acids such as, for example, acetic, propanoic, hydroxyacetic,lactic, pyruvic, oxalic (i.e. ethanedioic), malonic, succinic (i.e.butanedioic acid), maleic, fumaric, malic, tartaric, citric,methanesulfonic, ethanesulfonic, benzenesulfonic, p-toluenesulfonic,cyclamic, salicylic, p-aminosalicylic, pamoic and the like acids.Conversely said salt forms can be converted by treatment with anappropriate base into the free base form.

The compounds of Formula (I) containing an acidic proton may also beconverted into their non-toxic metal or amine addition salt forms bytreatment with appropriate organic and inorganic bases. Appropriate basesalt forms comprise, for example, the ammonium salts, the alkali andearth alkaline metal salts, e.g. the lithium, sodium, potassium,magnesium, calcium salts and the like, salts with organic bases, e.g.primary, secondary and tertiary aliphatic and aromatic amines such asmethylamine, ethylamine, propylamine, isopropylamine, the fourbutylamine isomers, dimethylamine, diethylamine, diethanolamine,dipropylamine, diisopropylamine, di-n-butylamine, pyrrolidine,piperidine, morpholine, trimethylamine, triethylamine, tripropylamine,quinuclidine, pyridine, quinoline and isoquinoline; the benzathine,N-methyl-D-glucamine, hydrabamine salts, and salts with amino acids suchas, for example, arginine, lysine and the like. Conversely the salt formcan be converted by treatment with acid into the free acid form.

The term solvate comprises the hydrates and solvent addition forms whichthe compounds of formula (I) are able to form, as well as the saltsthereof. Examples of such forms are e.g. hydrates, alcoholates and thelike.

The compounds of Formula (I) as prepared in the processes describedbelow may be synthesized in the form of racemic mixtures of enantiomersthat can be separated from one another following art-known resolutionprocedures. A manner of separating the enantiomeric forms of thecompounds of Formula (I) involves liquid chromatography using a chiralstationary phase. Said pure stereochemically isomeric forms may also bederived from the corresponding pure stereochemically isomeric forms ofthe appropriate starting materials, provided that the reaction occursstereospecifically. Preferably if a specific stereoisomer is desired,said compound would be synthesized by stereospecific methods ofpreparation. These methods will advantageously employ enantiomericallypure starting materials.

In the framework of this application, a compound according to theinvention is inherently intended to comprise all isotopic combinationsof its chemical elements. In the framework of this application, achemical element, in particular when mentioned in relation to a compoundaccording to formula (I), comprises all isotopes and isotopic mixturesof this element. For example, when hydrogen is mentioned, it isunderstood to refer to ¹H, ²H, ³H and mixtures thereof.

A compound according to the invention therefore inherently comprises acompound with one or more isotopes of one or more element, and mixturesthereof, including a radioactive compound, also called radiolabelledcompound, wherein one or more non-radioactive atoms has been replaced byone of its radioactive isotopes. By the term “radiolabelled compound” ismeant any compound according to formula (I), or a pharmaceuticallyacceptable salt thereof, which contains at least one radioactive atom.For example, a compound can be labelled with positron or with gammaemitting radioactive isotopes. For radioligand-binding techniques, the³H-atom or the ¹²⁵I-atom is the atom of choice to be replaced. Forimaging, the most commonly used positron emitting (PET) radioactiveisotopes are ¹¹C, ¹⁸F, ¹⁵O, and ¹³N, all of which are acceleratorproduced and have half-lives of 20, 100, 2 and 10 minutes respectively.Since the half-lives of these radioactive isotopes are so short, it isonly feasible to use them at institutions which have an accelerator onsite for their production, thus limiting their use. The most widely usedof these are ¹⁸F, ^(99m)Tc, ²⁰¹Tl and ¹²³I. The handling of theseradioactive isotopes, their production, isolation and incorporation in amolecule are known to the skilled person.

In particular, the radioactive atom is selected from the group ofhydrogen, carbon, nitrogen, sulfur, oxygen and halogen. In particular,the radioactive isotope is selected from the group of ³H, ¹¹C, ¹⁸F,¹²²I, ¹²³I, ¹²⁵I, ¹³¹I, ⁷⁵Br, ⁷⁶Br, ⁷⁷Br and ⁸²Br.

As used in the specification and the appended claims, the singular forms“a”, “an,” and “the” also include plural referents unless the contextclearly dictates otherwise. By way of example, “a compound” means onecompound or more than one compound.

The terms described above and others used in the specification are wellunderstood to those in the art.

Preferred features of the compounds of this invention are now set forth.The present invention concerns novel compounds of Formula (I):

and stereoisomeric forms thereof, whereinHet¹ is a 5-membered or 6-membered aromatic heterocycle,having formula (a-1), (a-2), (a-3), (a-4) or (a-5):

R⁰ is H or C₁₋₄alkyl;R¹ is H, C₁₋₄alkyl or C₁₋₄alkyloxyC₁₋₄alkyl;R² is C₁₋₄alkyl;

X is O or S; G¹ is CH or N;

G² is CH, N or C substituted with C₁₋₄alkyl;provided that G¹ and G² are not simultaneously N;

G³ is CH or N;

R^(10a) and R^(10b) each independently are hydrogen or C₁₋₄alkyl;A¹ is CR³ or N; wherein R³ is H, halo or C₁₋₄alkyloxy;A², A³ and A⁴ each independently are CH, CF or N; provided that maximumtwo of A¹, A², A³ and A⁴ are N;Het² is a 9-membered bicyclic aromatic heterocycle,having formula (b-1) or (b-2):

Z¹ is CH or N; Z² is CR^(4a) or N;

Z³ is CH or N; provided that maximum one of Z¹, Z² and Z³ is N;

Y¹ is CH or N; Y² is CR^(4b) or N;

Y³ is CH or N; provided that maximum one of Y¹, Y² and Y³ is N;R^(4a) is H; halo; C₁₋₄alkyloxy; cyano; cycloC₃₋₇alkyl;C₁₋₄alkylcarbonyl;C₁₋₄alkyloxycarbonyl; or C₁₋₄alkyl optionally substituted with one ormore substituents each independently selected from the group consistingof halo and amino;R^(4b) is H; H halo; C₁₋₄alkyloxy; cyano; cycloC₃₋₇alkyl; or C₁₋₄alkyloptionally substituted with one or more substituents each independentlyselected from the group consisting of halo and amino;R⁵ is H; halo; cyano; C₁₋₄alkyloxy; C₂₋₆alkenyl; or C₁₋₆alkyl optionallysubstituted with one or more substituents each independently selectedfrom the group consisting of C₁₋₄alkyloxy and halo;R^(6a) is C₂₋₆alkyl substituted with one or more halo substituents;C₁₋₆alkyl optionally substituted with one or more substituents eachindependently selected from the group consisting of piperidinyl, Ar,C₁₋₆alkyloxy, tetrahydropyranyl, cycloC₃₋₇alkyloxy, and cycloC₃₋₇alkyl;cycloC₃₋₇alkyl; C₁₋₄alkylcarbonyl; tetrahydropyranyl; Ar;R⁸R⁹N-carbonyl; or CH₂—O—Ar;R^(6b) is C₂₋₆alkyl substituted with one or more halo substituents;C₁₋₆alkyl optionally substituted with one or more substituents eachindependently selected from the group consisting of piperidinyl, Ar,C₁₋₆alkyloxy, tetrahydropyranyl, cycloC₃₋₇alkyloxy, and cycloC₃₋₇alkyl;cycloC₃₋₇alkyl; cycloC₃₋₇alkyl substituted with one or more phenylsubstituents optionally substituted with one or more halo substituents;piperidinyl; morpholinyl; pyrrolidinyl; NR⁸R⁹; tetrahydropyranyl; O—Ar;C₁₋₆alkyloxy; C₁₋₆alkylthio; Ar; CH₂—O—Ar; S—Ar; NCH₃—Ar; or NH—Ar;wherein each piperidinyl, morpholinyl, and pyrrolidinyl may optionallybe substituted with one or more substituents each independently selectedfrom the group consisting of C₁₋₄alkyl, C₂₋₆alkenyl, C₁₋₄alkylcarbonyl,halo, and C₁₋₄alkyloxycarbonyl; wherein each Ar independently is phenyloptionally substituted with one or more substituents each independentlyselected from the group consisting of halo, C₁₋₄alkyloxy, cyano, NR⁸R⁹,morpholinyl, C₁₋₄alkyl, and C₁₋₄alkyl substituted with one or more halosubstituents; pyridinyl optionally substituted with one or moresubstituents each independently selected from the group consisting ofhalo, C₁₋₄ alkyloxy, cyano, C₁₋₄alkyl, and C₁₋₄alkyl substituted withone or more halo substituents; oxazolyl optionally substituted with oneor more C₁₋₄alkyl substituents; orthienyl optionally substituted with one or more halo substituents;each R⁸ independently is H or C₁₋₄alkyl;each R⁹ independently is H or C₁₋₄alkyl;R⁷ is H, C₁₋₆alkyl optionally substituted with one or more substituentseach independently selected from the group consisting of halo, phenyl,and C₁₋₄alkyloxy; and the pharmaceutically acceptable addition salts,and the solvates thereof.

In an embodiment, the invention relates to compounds of Formula (I) andstereoisomeric forms thereof, or any subgroup thereof as mentioned inany of the other embodiments, wherein one or more, preferably all, ofthe following restrictions apply:

(a) A², A³ and A⁴ each independently are CH or N; provided that maximumtwo of A¹, A², A³ and A⁴ are N;

(b) Z² is CR^(4a);

(c) R^(4a) is H; halo; cyano; cycloC₃₋₇alkyl; C₁₋₄alkylcarbonyl;C₁₋₄alkyloxycarbonyl; or C₁₋₄alkyl optionally substituted with one ormore substituents each independently selected from the group consistingof halo and amino;(d) R⁵ is H; halo; C₁₋₄alkyloxy; C₂₋₆alkenyl; or C₁₋₆alkyl optionallysubstituted with one or more C₁₋₄alkyloxy substituents;(e) R^(6a) is C₁₋₆alkyl optionally substituted with one or moresubstituents each independently selected from the group consisting ofAr, C₁₋₆alkyloxy, and tetrahydropyranyl; cycloC₃₋₇alkyl;C₁₋₄alkylcarbonyl; tetrahydropyranyl; Ar; or R⁸R⁹N-carbonyl;(f) R^(6b) is C₂₋₆alkyl substituted with one or more halo substituents;C₁₋₆alkyl optionally substituted with one or more substituents eachindependently selected from the group consisting of Ar, C₁₋₆alkyloxy,tetrahydropyranyl, and cycloC₃₋₇alkyl; cycloC₃₋₇alkyl; cycloC₃₋₇alkylsubstituted with one phenyl substituent optionally substituted with oneor more halo substituents; unsubstituted pyrrolidinyl; NR⁸R⁹;tetrahydropyranyl; Ar; or CH₂—O—Ar;(g) each Ar independently is phenyl optionally substituted with one ormore substituents each independently selected from the group consistingof halo, C₁₋₄alkyloxy, C₁₋₄alkyl, and C₁₋₄alkyl substituted with one ormore halo substituents; oxazolyl optionally substituted with one or moreC₁₋₄alkyl substituents; or thienyl optionally substituted with one ormore halo substituents;(h) each R⁸ independently is C₁₋₄alkyl;(i) each R⁹ independently is C₁₋₄alkyl;(j) R⁷ is C₁₋₆ alkyl optionally substituted with one or moreC₁₋₄alkyloxy substituents; and the pharmaceutically acceptable additionsalts, and the solvates thereof.

In an embodiment, the invention relates to compounds of Formula (I) andstereoisomeric forms thereof, or any subgroup thereof as mentioned inany of the other embodiments, wherein one or more, preferably all, ofthe following restrictions apply:

(a) R⁰ is H or methyl;(b) R¹ is H, methyl, isopropyl or methoxymethyl;(c) R² is methyl;(d) G² is CH, N or C substituted with methyl;provided that G¹ and G² are not simultaneously N;(e) R^(10a) and R^(10b) each independently are hydrogen or methyl;(f) A¹ is CR³ or N; wherein R³ is H, F or methoxy;

(g) A² is CH or N; (h) A³ is CH; (i) A⁴ is CH or N; (j) Z² is CR^(4a);

(k) R^(4a) is H; Br; Cl; F; cyano; cyclopropyl; methylcarbonyl;methoxycarbonyl; or C₁₋₄ alkyl optionally substituted with one or moresubstituents each independently selected from the group consisting of Fand amino;(l) R^(4b) is H; F; methoxy; cyano; cyclopropyl; or C₁₋₄alkyl optionallysubstituted with one or more substituents each independently selectedfrom the group consisting of F and amino;(m) R⁵ is H; I; methoxy; 1-propen-2-yl; or C₁₋₆alkyl optionallysubstituted with one or more methoxy substituents;(n) R^(6a) is C₁₋₆alkyl optionally substituted with one or moresubstituents each independently selected from the group consisting ofAr, ethoxy, and tetrahydropyranyl; cyclopropyl; methylcarbonyl;tetrahydropyranyl; Ar; or R⁸R⁹N-carbonyl;(o) R^(6b) is C₂₋₆alkyl substituted with one or more F substituents;C₁₋₆alkyl optionally substituted with one or more substituents eachindependently selected from the group consisting of Ar, isopropyloxy,tetrahydropyranyl, and cyclopropyl; cyclopropyl; cyclopropyl substitutedwith one phenyl substituent which is further substituted with one ormore Cl substituents; unsubstituted pyrrolidinyl; NR⁸R⁹;tetrahydropyranyl; Ar; or CH₂—O—Ar;(p) wherein each Ar independently is phenyl optionally substituted withone or more substituents each independently selected from the groupconsisting of F, Cl, C₁₋₄alkyloxy, C₁₋₄alkyl, and C₁₋₄alkyl substitutedwith one or more F substituents; oxazolyl optionally substituted withone or more methyl substituents; or thienyl optionally substituted withone or more Cl substituents;(q) each R⁸ is methyl;(r) each R⁹ is methyl or 2-methyl-propyl;(s) R⁷ is C₁₋₆alkyl optionally substituted with one or more methoxysubstituents;and the pharmaceutically acceptable addition salts, and the solvatesthereof.

In an embodiment, the invention relates to compounds of Formula (I) andstereoisomeric forms thereof, or any subgroup thereof as mentioned inany of the other embodiments, wherein one or more, preferably all, ofthe following restrictions apply:

(a) Het¹ is a 5-membered or 6-membered aromatic heterocycle, havingformula (a-1) or (a-5); in particular (a-1);(b) R⁰ is H or C₁₋₄alkyl; in particular H or methyl;(c) R¹ is H or C₁₋₄alkyl; in particular H or methyl;

(d) X is O;

(e) R^(10a) and R^(10b) each independently are hydrogen or C₁₋₄alkyl; inparticular R^(10a) is H and R^(10b) is C₁₋₄alkyl; more in particularR^(10a) is H and R^(10b) is methyl;(f) A¹ is CR³ or N; wherein R³ is C₁₋₄alkyloxy; in particular R³ ismethoxy;

(g) A², A³ and A⁴ are CH;

(h) Het² is a 9-membered bicyclic aromatic heterocycle, having formula(b-1) or (b-2);in particular (b-2);

(i) Z¹ and Z³ are CH; (j) Z² is CR^(4a);

(k) R^(4a) is H or halo; in particular halo; more in particular fluoro;

(l) Y¹ and Y³ are CH; (m) Y² is CR^(4b);

(n) R^(4b) is H or C₁₋₄alkyloxy; in particular H or methoxy;(o) R⁵ is H or methyl; in particular H;(p) R^(6a) is C₁₋₆alkyl;(q) R^(6b) is phenyl optionally substituted with one or more halosubstituents; in particular phenyl substituted with one halosubstituent; more in particular phenyl substituted with one Fsubstituent; most in particular phenyl substituted with one Fsubstituent in the para position.(r) R⁷ is C₁₋₆alkyl; in particular methyl or isopropyl;and the pharmaceutically acceptable addition salts, and the solvatesthereof.

In an embodiment, the present invention concerns novel compounds ofFormula (I), and stereoisomeric forms thereof, wherein

Het¹ is a 5-membered aromatic heterocycle, having formula (a-1), (a-2),(a-3) or (a-4)

R⁰ is H or C₁₋₄alkyl;R¹ is H or C₁₋₄alkyl;R² is C₁₋₄alkyl;

X is O or S;

G¹ is CH or N; G² is CH, N or C substituted with C₁₋₄alkyl;provided that G¹ and G² are not simultaneously N;

G³ is CH or N;

A¹ is CR³ or N; wherein R³ is H, halo or C₁₋₄alkyloxy;A², A³ and A⁴ each independently are CH, CF or N; provided that maximumtwo of A¹, A², A³ and A⁴ are N;Het² is a 9-membered bicyclic aromatic heterocycle, having formula (b-1)or (b-2):

Z¹ is CH or N; Z² is CR^(4a); Z³ is CH; Y¹ is CH or N; Y² is CR^(4b); Y³is CH;

R^(4a) is H; halo; C₁₋₄alkyloxy; cyano; or C₁₋₄alkyl optionallysubstituted with one or more halo substituents;R^(4b) is H; halo; C₁₋₄alkyloxy; cyano; or C₁₋₄alkyl optionallysubstituted with one or more halo substituents;R⁵ is H; halo; cyano; or C₁₋₆alkyl optionally substituted with one ormore substituents each independently selected from the group consistingof C₁₋₄alkyloxy and halo;R^(6a) is C₂₋₆alkyl substituted with one or more halo substituents;C₁₋₆alkyl optionally substituted with one or more substituents eachindependently selected from the group consisting of piperidinyl, Ar,C₁₋₆alkyloxy, tetrahydropyranyl, cycloC₃₋₇alkyloxy, and cycloC₃₋₇alkyl;cycloC₃₋₇alkyl; tetrahydropyranyl; Ar; or CH₂—O—Ar;R^(6b) is C₂₋₆alkyl substituted with one or more halo substituents;C₁₋₆alkyl optionally substituted with one or more substituents eachindependently selected from the group consisting of piperidinyl, Ar,C₁₋₆alkyloxy, tetrahydropyranyl, cycloC₃₋₇alkyloxy, and cycloC₃₋₇alkyl;cycloC₃₋₇alkyl; piperidinyl; morpholinyl; pyrrolidinyl; NR⁸R⁹;tetrahydropyranyl; O—Ar; C₁₋₆alkyloxy; C₁₋₆alkylthio; Ar; CH₂—O—Ar;S—Ar; NCH₃—Ar or NH—Ar;wherein each piperidinyl, morpholinyl, and pyrrolidinyl may optionallybe substituted with one or more substituents each independently selectedfrom the group consisting of C₁₋₄ alkyl, C₂₋₆alkenyl, C₁₋₄alkylcarbonyl,halo, and C₁₋₄alkyloxycarbonyl;wherein each Ar independently is phenyl optionally substituted with oneor more substituents each independently selected from the groupconsisting of halo, C₁₋₄alkyloxy, cyano, NR⁸R⁹, morpholinyl, C₁₋₄alkyl,and C₁₋₄alkyl substituted with one or more halo substituents; orpyridinyl optionally substituted with one or more substituents eachindependently selected from the group consisting of halo, C₁₋₄alkyloxy,cyano, C₁₋₄alkyl, and C₁₋₄alkyl substituted with one or more halosubstituents;each R⁸ independently is H or C₁₋₄alkyl;each R⁹ independently is H or C₁₋₄alkyl;R⁷ is H, C₁₋₆alkyl optionally substituted with one or more substituentseach independently selected from the group consisting of halo, phenyl,and C₁₋₄alkyloxy; and the pharmaceutically acceptable addition salts,and the solvates thereof.

In an embodiment, the present invention concerns novel compounds ofFormula (I):

and stereoisomeric forms thereof, whereinHet¹ is a 5-membered aromatic heterocycle, having formula (a-1), (a-2),(a-3) or (a-4)

R⁰ is H or C₁₋₄alkyl;R¹ is H or C₁₋₄alkyl;R² is C₁₋₄alkyl;

X is O or S; G¹ is CH or N;

G² is CH, N or C substituted with C₁₋₄alkyl; provided that G¹ and G² arenot simultaneously N;

G³ is CH or N;

A¹ is CR³ or N; wherein R³ is H, halo or C₁₋₄alkyloxy;A², A³ and A⁴ each independently are CH, CF or N; provided that no morethan two of

A¹, A², A³ and A⁴ are N;

Het² is a 9-membered bicyclic aromatic heterocycle, having formula(b-1a) or (b-2a)

R^(4a) is H, halo, C₁₋₄alkyloxy, cyano, or C₁₋₄alkyl optionallysubstituted with one or more substituents selected from halo;R^(4b) is H, halo, C₁₋₄alkyloxy, cyano, or C₁₋₄alkyl optionallysubstituted with one or more substituents selected from halo;R⁵ is H; halo; cyano; or C₁₋₆alkyl optionally substituted with one ormore substituents selected from C₁₋₄alkyloxy and halo;R^(6a) is C₂₋₆alkyl substituted with one or more substituents selectedfrom halo; C₁₋₆alkyl optionally substituted with one or moresubstituents selected from piperidinyl, Ar, C₁₋₆alkyloxy,tetrahydropyranyl, cycloC₃₋₇alkyloxy, and cycloC₃₋₇alkyl;cycloC₃₋₇alkyl; tetrahydropyranyl; Ar; or CH₂—O—Ar;R^(6b) is C₂₋₆alkyl substituted with one or more substituents selectedfrom halo; C₁₋₆alkyl optionally substituted with one or moresubstituents selected from piperidinyl, Ar, C₁₋₆alkyloxy,tetrahydropyranyl, cycloC₃₋₇alkyloxy, and cycloC₃₋₇alkyl;cycloC₃₋₇alkyl; piperidinyl; morpholinyl; pyrrolidinyl; NR⁸R⁹;tetrahydropyranyl; O—Ar; C₁₋₆alkyloxy; C₁₋₆alkylthio; Ar; CH₂—O—Ar;S—Ar; NCH₃—Ar or NH—Ar;wherein each piperidinyl, morpholinyl, and pyrrolidinyl may optionallybe substituted with one or more substituents selected from C₁₋₄alkyl,C₂₋₆alkenyl, C₁₋₄alkylcarbonyl, halo, and C₁₋₄alkyloxycarbonyl;wherein each Ar independently is phenyl optionally substituted with oneor more substituents each independently selected from halo,C₁₋₄alkyloxy, cyano, NR⁸R⁹, morpholinyl, C₁₋₄alkyl, and C₁₋₄alkylsubstituted with one or more substituents selected from halo; orpyridinyl optionally substituted with 1 or more substituents eachindependently selected from halo, C₁₋₄alkyloxy, cyano, C₁₋₄alkyl, andC₁₋₄alkyl substituted with one or more substituents selected from halo;wherein R⁸ is H or C₁₋₄alkyl;wherein R⁹ is H or C₁₋₄alkyl;R⁷ is H, C₁₋₆alkyl optionally substituted with one or more substituentsselected from halo, phenyl and C₁₋₄alkyloxy;

Z¹ is CH or N; Y¹ is CH or N;

and the pharmaceutically acceptable addition salts, and the solvatesthereof.

In another embodiment, the invention relates to compounds of Formula (I)and stereoisomeric forms thereof, wherein

Het¹ is a 5-membered aromatic heterocycle, having formula (a-1), (a-2),(a-3) or (a-4)

R⁰ is H or C₁₋₄alkyl;R¹ is H or C₁₋₄alkyl;R² is C₁₋₄alkyl;

X is O or S; G¹ is CH;

G² is CH, or C substituted with C₁₋₄alkyl;

G³ is CH;

A¹ is CR³ or N; wherein R³ is H, halo or C₁₋₄alkyloxy;A², A³ and A⁴ each independently are CH or N; provided that maximum twoof A¹, A²,

A³ and A⁴ are N;

Het² is a 9-membered bicyclic aromatic heterocycle, having formula (b-1)or (b-2);wherein Z¹ is CH or N; Z² is CR^(4a); Z³ is CH; Y¹ is CH or N; Y² isCR^(4b); Y³ is CH;R^(4a) is H; halo; cyano; or C₁₋₄alkyl optionally substituted with oneor more halo substituents;R^(4b) is H; halo; cyano; or C₁₋₄alkyl optionally substituted with oneor more halo substituents;R⁵ is H or C₁₋₄alkyl;R^(6a) is Ar; C₂₋₆alkyl substituted with one or more halo substituents;orC₁₋₆alkyl optionally substituted with one or more substituents eachindependently selected from the group consisting of Ar, C₁₋₆alkyloxy,and cycloC₃₋₂alkyl;R^(6b) is Ar; C₂₋₆alkyl substituted with one or more halo substituents;C₁₋₆ alkyl optionally substituted with one or more substituents eachindependently selected from the group consisting of Ar, C₁₋₆alkyloxy,and cycloC₃₋₂alkyl; or CH₂—O—Ar;wherein each Ar independently is phenyl optionally substituted with oneor more substituents each independently selected from the groupconsisting of halo, cyano,C₁₋₄alkyloxy, C₁₋₄alkyl, and C₁₋₄alkyl substituted with one or more halosubstituents;R² is C₁₋₆alkyl optionally substituted with one or more substituentseach independently selected from the group consisting of halo andC₁₋₄alkyloxy;and the pharmaceutically acceptable addition salts, and the solvatesthereof.

In another embodiment, the invention relates to compounds of Formula (I)and stereoisomeric forms thereof, wherein

Het¹ is a 5-membered aromatic heterocycle, having formula (a-1), (a-2),(a-3) or (a-4);R⁰ is H or C₁₋₄alkyl;R¹ is H or C₁₋₄alkyl;R² is C₁₋₄alkyl;

X is O or S; G¹ is CH;

G² is CH or C substituted with C₁₋₄alkyl;

G³ is CH;

A¹ is CR³ or N; wherein R³ is H, halo or C₁₋₄alkyloxy;

A² is CH or N; A³ and A⁴ are CH;

Het² is a 9-membered bicyclic aromatic heterocycle, having formula (b-1)or (b-2);wherein Z¹ is CH or N; Z² is CR^(4a); Z³ is CH; Y¹ is CH or N; Y² isCR^(4b); Y³ is CH;R^(4a) is H or halo;R^(4b) is H, halo or C₁₋₄alkyl optionally substituted with one or morehalo substituents;R⁵ is H, or C₁₋₄alkyl;R^(6a) is Ar; or C₁₋₆alkyl optionally substituted with one Ar;R^(6b) is Ar; C₂₋₆alkyl substituted with one or more halo substituents;C₁₋₆alkyl optionally substituted with one or more Ar substituents; orCH₂—O—Ar;wherein each Ar independently is phenyl optionally substituted with oneor more substituents each independently selected from the groupconsisting of halo, C₁₋₄alkyloxy, C₁₋₄alkyl, and C₁₋₄alkyl substitutedwith one or more halo substituents;R⁷ is C₁₋₆alkyl optionally substituted with one or more C₁₋₄alkyloxysubstituents; and the pharmaceutically acceptable addition salts, andthe solvates thereof.

In another embodiment, the invention relates to compounds of Formula (I)and stereoisomeric forms thereof, wherein

Het¹ is a 5-membered aromatic heterocycle, having formula (a-1), (a-2),(a-3) or (a-4);R⁰ is H or methyl;R¹ is H or methyl;R² is methyl;

X is O or S; G¹ is CH;

G² is CH, or C substituted with methyl;

G³ is CH;

A¹ is CR³ or N; wherein R³ is H, F or methoxy;A² and A³ are CH or N; provided that maximum two of A¹, A² and A³ are N;A⁴ is CH;Het² is a 9-membered bicyclic aromatic heterocycle, having formula (b-1)or (b-2);wherein Z¹ is CH or N; Z² is CR^(4a); Z³ is CH; Y¹ is CH or N; Y² isCR^(4b); Y³ is CH;R^(4a) is H, Br, F, cyano or CF₃;R^(4b) is H, Br, F, cyano, CH₃ or CF₃;

R⁵ is H or CH₃;

R^(6a) is Ar; ethyl; or methyl optionally substituted with one or moresubstituents each independently selected from the group consisting ofC₁₋₃alkyloxy and Ar;R^(6b) is Ar; 3,3,3-trifluoropropyl; cyclopropylmethyl; methyloptionally substituted with one or more Ar substituents; or CH₂—O—Ar;wherein each Ar independently is phenyl optionally substituted with oneor more substituents each independently selected from the groupconsisting of F, Cl, CN, methyl, 2-propyl, methoxy, ethoxy, andtrifluoromethyl;R⁷ is methyl, 2-propyl, tert-butyl, or ethyl optionally substituted withone methoxy; and the pharmaceutically acceptable addition salts, and thesolvates thereof.

In another embodiment, the invention relates to compounds of Formula (I)and stereoisomeric forms thereof, wherein

Het¹ is a 5-membered aromatic heterocycle, having formula (a-1), (a-2),(a-3) or (a-4);R⁰ is H or methyl;R¹ is H or methyl;R² is methyl;

X is O or S; G¹ is CH;

G² is CH, or C substituted with methyl;

G³ is CH;

A¹ is CR³ or N; wherein R³ is H, F or methoxy;

A² is CH or N A³ and A⁴ are CH;

Het² is a 9-membered bicyclic aromatic heterocycle, having formula (b-1)or (b-2);wherein Z¹ is CH or N; Z² is CR^(4a); Z³ is CH; Y¹ is CH or N; Y² isCR^(4b); Y³ is CH;

R^(4a) is H or Br; R^(4b) is H, F, CH₃ or CF₃; R⁵ is H, or CH₃;

R^(6a) is Ar; or methyl optionally substituted with one Ar;R^(6b) is Ar; 3,3,3-trifluoropropyl; cyclopropylmethyl; methyloptionally substituted with one or more Ar substituents; or CH₂—O—Ar;wherein each Ar independently is phenyl optionally substituted with oneor more substituents each independently selected from the groupconsisting of F, Cl, methyl, 2-propyl, methoxy, ethoxy, andtrifluoromethyl;R⁷ is methyl, 2-propyl, tert-butyl, or ethyl optionally substituted withone methoxy; and the pharmaceutically acceptable addition salts, and thesolvates thereof.

In another embodiment, the invention relates to compounds of Formula (I)and stereoisomeric forms thereof, wherein

Het¹ is a 5-membered aromatic heterocycle, having formula (a-1);R⁰ is H or C₁₋₄alkyl;R¹ is H or C₁₋₄alkyl;

X is O;

A¹ is CR³ or N; wherein R³ is H, F or C₁₋₄alkyloxy;

A², A³ and A⁴ are CH;

Het² is a 9-membered bicyclic aromatic heterocycle, having formula(b-2); wherein Y¹ is CH or N; Y² is CR^(4b); Y³ is CH;

R^(4b) is H, F or CF₃;

R^(6b) is phenyl optionally substituted with one or more substituentseach independently selected from the group consisting of halo, methyl,and methoxy;R⁷ is C₁₋₄alkyl;and the pharmaceutically acceptable addition salts, and the solvatesthereof.

In another embodiment, the invention relates to compounds of Formula (I)and stereoisomeric forms thereof, wherein

Het¹ is a 5-membered aromatic heterocycle, having formula (a-1);R⁰ is H or C₁₋₄alkyl;R¹ is H or C₁₋₄alkyl;

X is O;

A¹ is CR³; wherein R³ is C₁₋₄alkyloxy;

A², A³ and A⁴ are CH;

Het² is a 9-membered bicyclic aromatic heterocycle, having formula(b-2); wherein Y¹ is CH; Y² is CH; Y³ is CH;R^(6b) is phenyl optionally substituted with one or more halosubstituents;R⁷ is C₁₋₄alkyl;and the pharmaceutically acceptable addition salts, and the solvatesthereof.

In another embodiment, the invention relates to compounds according toany of the other embodiments, wherein

R^(6a) is C₂₋₆alkyl substituted with one or more halo substituents;C₁₋₆alkyl optionally substituted with one or more substituents eachindependently selected from the group consisting of Ar, C₁₋₆alkyloxy,cycloC₃₋₇alkyloxy, and cycloC₃₋₇alkyl; Ar; or CH₂—O—Ar;wherein each Ar independently is phenyl optionally substituted with oneor more substituents each independently selected from the groupconsisting of halo, C₁₋₄ alkyloxy, cyano, C₁₋₄alkyl, and C₁₋₄alkylsubstituted with one or more halo substituents.

In another embodiment, the invention relates to compounds according toany of the other embodiments, wherein

R^(6b) is C₂₋₆alkyl substituted with one or more halo substituents;C₁₋₆alkyl optionally substituted with one or more substituents eachindependently selected from the group consisting of Ar, C₁₋₆alkyloxy,cycloC₃₋₇alkyloxy, and cycloC₃₋₇alkyl; Ar; or CH₂—O—Ar;wherein each Ar independently is phenyl optionally substituted with oneor more substituents each independently selected from the groupconsisting of halo, C₁₋₄ alkyloxy, cyano, C₁₋₄alkyl, and C₁₋₄alkylsubstituted with one or more halo substituents.

In another embodiment, the invention relates to compounds according toany of the other embodiments, wherein

R^(6a) is isobutyl; cyclopropylmethyl; 3,3,3-trifluoropropyl; C₂₋₄alkylsubstituted with methoxy; CH₂—O—Ar; or Ar;wherein each Ar independently is phenyl optionally substituted with oneor more substituents each independently selected from the groupconsisting of halo, C₁₋₄alkyloxy, cyano, C₁₋₄alkyl, and C₁₋₄alkylsubstituted with one or more halo substituents.

In another embodiment, the invention relates to compounds according toany of the other embodiments, wherein

R^(6b) is isobutyl; cyclopropylmethyl; 3,3,3-trifluoropropyl; C₂₋₄alkylsubstituted with methoxy; CH₂—O—Ar; or Ar;wherein each Ar independently is phenyl optionally substituted with oneor more substituents each independently selected from the groupconsisting of halo, C₁₋₄ alkyloxy, cyano, C₁₋₄alkyl, and C₁₋₄alkylsubstituted with one or more halo substituents.

In another embodiment, the invention relates to compounds according toany of the other embodiments, wherein R^(6a) is Ar;

wherein each Ar independently is phenyl optionally substituted with oneor more substituents each independently selected from the groupconsisting of halo, C₁₋₄alkyloxy, cyano, C₁₋₄alkyl, and C₁₋₄alkylsubstituted with one or more halo substituents.

In another embodiment, the invention relates to compounds according toany of the other embodiments, wherein R^(6a) is C₂₋₆alkyl substitutedwith one ore more halo substituents; or phenyl optionally substitutedwith one or more substituents each independently selected from the groupconsisting of halo, C₁₋₄alkyloxy, C₁₋₄alkyl, and C₁₋₄alkyl substitutedwith one or more halo substituents;

in particular phenyl optionally substituted with one or moresubstituents each independently selected from the group consisting ofhalo, methoxy, methyl, and trifluoromethyl.

In another embodiment, the invention relates to compounds according toany of the other embodiments, wherein R^(6b) is Ar;

wherein each Ar independently is phenyl optionally substituted with oneor more substituents each independently selected from the groupconsisting of halo, C₁₋₄ alkyloxy, cyano, C₁₋₄alkyl, and C₁₋₄alkylsubstituted with one or more halo substituents.

In another embodiment, the invention relates to compounds according toany of the other embodiments, wherein R^(6b) is C₂₋₆alkyl substitutedwith one ore more halo substituents; or phenyl optionally substitutedwith one or more substituents each independently selected from the groupconsisting of halo, C₁₋₄alkyloxy, C₁₋₄alkyl, and C₁₋₄alkyl substitutedwith one or more halo substituents;

in particular C₂₋₆alkyl substituted with one ore more halo substituents;or phenyl optionally substituted with one or more substituents eachindependently selected from the group consisting of halo, methoxy,methyl, and trifluoromethyl.

In another embodiment, the invention relates to compounds according toany of the other embodiments, wherein R^(4a) is H, halo, C₁₋₄alkyloxy,or methyl optionally substituted with one or more halo substituents; inparticular H or halo; more in particular H or F.

In another embodiment, the invention relates to compounds according toany of the other embodiments, wherein R^(4a) is H, halo, methyl, cyanoor trifluoromethyl.

In another embodiment, the invention relates to compounds according toany of the other embodiments, wherein R^(4b) is H, halo, C₁₋₄alkyloxy,or methyl optionally substituted with one or more halo substituents; inparticular H, halo or C₁₋₄alkyloxy; more in particular H, F or methoxy.

In another embodiment, the invention relates to compounds according toany of the other embodiments, wherein R^(4b) is H, halo, methyl, cyanoor trifluoromethyl.

In another embodiment, the invention relates to compounds according toany of the other embodiments, wherein R⁷ is C₁₋₆alkyl optionallysubstituted with one or more substituents each independently selectedfrom the group consisting of halo and C₁₋₄alkyloxy.

In another embodiment, the invention relates to compounds according toany of the other embodiments, wherein R⁷ is C₁₋₄alkyl.

In another embodiment, the invention relates to compounds according toany of the other embodiments, wherein R⁸ is H or C₁₋₄alkyl; and whereinR⁹ is H or C₁₋₄alkyl.

In an embodiment, the invention relates to compounds according to any ofthe other embodiments, wherein

R⁵ is H or methyl;R^(6a) is phenyl substituted in a meta position and optionally furthersubstituted in other positions.

In an embodiment, the invention relates to compounds according to any ofthe other embodiments, wherein

R⁵ is H or methyl;R^(6a) is phenyl substituted in an ortho position and optionally furthersubstituted in other positions.

In an embodiment, the invention relates to compounds according to any ofthe other embodiments, wherein

R⁵ is H or methyl;R^(6a) is phenyl substituted in the para position and optionally furthersubstituted in other positions.

In an embodiment, the invention relates to compounds according to any ofthe other embodiments, wherein

R⁵ is H or methyl;R^(6a) is phenyl substituted with F in the para position and optionallyfurther substituted in other positions.

In an embodiment, the invention relates to compounds according to any ofthe other embodiments, wherein

R⁵ is H;

R^(6a) is methyl substituted with phenyl, wherein phenyl is optionallysubstituted with one or more substituents each independently selectedfrom the group consisting of halo, C₁₋₄alkyloxy, cyano, NR⁸R⁹,morpholinyl, C₁₋₄alkyl, and C₁₋₄alkyl substituted with one or more halosubstituents.

In an embodiment, the invention relates to compounds according to any ofthe other embodiments, wherein

R^(6b) is phenyl substituted in a meta position and optionally furthersubstituted in other positions.

In an embodiment, the invention relates to compounds according to any ofthe other embodiments, wherein

R^(6b) is phenyl substituted in an ortho position and optionally furthersubstituted in other positions.

In an embodiment, the invention relates to compounds according to any ofthe other embodiments, wherein

R^(6b) is phenyl substituted in the para position and optionally furthersubstituted in other positions.

In an embodiment, the invention relates to compounds according to any ofthe other embodiments, wherein

R^(6b) is phenyl substituted with F in the para position and optionallyfurther substituted in other positions.

In an embodiment, the invention relates to compounds according to any ofthe other embodiments, wherein

R^(6b) is methyl substituted with phenyl, wherein phenyl is optionallysubstituted with one or more substituents each independently selectedfrom the group consisting of halo, C₁₋₄alkyloxy, cyano, NR⁸R⁹,morpholinyl, C₁₋₄alkyl, and C₁₋₄alkyl substituted with one or more halosubstituents.

In an embodiment, the invention relates to compounds according to any ofthe other embodiments, wherein one of R⁰ and R¹ is C₁₋₄alkyl, and one ofR⁰ and R¹ is H; in particular one of R⁰ and R¹ is methyl, and one of R⁰and R¹ is H.

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein X is O.

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein Het¹ is (a-1) and X is O.

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein X is S.

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein Het¹ is (a-1) and X is S.

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein A¹ is CR³ or N; wherein R³ is H, For methoxy.

In a next embodiment, the invention relates to compounds according toany of the other embodiments, wherein

A¹ is CR³ or N; wherein R³ is H, halo or C₁₋₄alkyloxy; in particular R³is H, F or C₁₋₄alkyloxy; more in particular R³ is H, F or methoxy; mostin particular R³ is methoxy;A² is CH, CF or N; in particular CH or N;A³ and A⁴ are CH or N; provided that maximum two of A¹, A², A³ and A⁴are N.

In a next embodiment, the invention relates to compounds according toany of the other embodiments, wherein

A¹ is CR³ or N; wherein R³ is H, halo or C₁₋₄alkyloxy;A² is CH, CF or N; in particular CH or CF; more in particular CH;

A³ and A⁴ are CH.

In a next embodiment, the invention relates to compounds according toany of the other embodiments, wherein A¹ is N and A² is CH.

In a next embodiment, the invention relates to compounds according toany of the other embodiments, wherein A² is CH when A¹ is N.

In a next embodiment, the invention relates to compounds according toany of the other embodiments, wherein maximum one of A¹, A², A³ and A⁴is N.

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein Het¹ has formula (a-1).

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein Het¹ has formula (a-2).

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein Het¹ has formula (a-3).

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein Het¹ has formula (a-4).

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein Het¹ has formula (a-5).

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein Het² has formula (b-1).

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein Het² has formula (b-2).

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein Y¹ is CH.

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein Y¹ is N.

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein Z¹ is CH.

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein Z¹ is N.

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein Z² is CR^(4a).

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein Z² is N.

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein one of Z² and Z³ is N, or whereinone of Y² and Y³ is N.

In a further embodiment, the invention relates to compounds according toany of the other embodiments, wherein C₁₋₆alkyl is restricted toC₁₋₄alkyl.

In an embodiment the compound of Formula (I) is selected from the groupcomprising:

-   2-(4-fluorophenyl)-N-[3-methoxy-4-(5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   N-[4-(2,4-dimethyl-5-oxazolyl)-3-methoxyphenyl]-2-(4-fluorophenyl)-imidazo[1,2-a]pyridin-8-amine,-   N-[4-(2,4-dimethyl-5-oxazolyl)-3-methoxyphenyl]-3-methyl-2-phenyl-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-1-methyl-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(1-methyl-1H-pyrazol-4-yl)phenyl]-1-methyl-1H-benzimidazol-4-amine,-   N-[4-(2,4-dimethyl-5-thiazolyl)-3-methoxyphenyl]-2-(3-methoxyphenyl)-3-methyl-imidazo[1,2-a]pyridin-8-amine,-   N-[4-(1,3-dimethyl-1H-pyrazol-4-yl)-3-methoxyphenyl]-2-(3-methoxyphenyl)-3-methyl-imidazo[1,2-a]pyridin-8-amine,-   N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-2-(3-methoxyphenyl)-3-methyl-imidazo[1,2-a]pyridin-8-amine,-   N-[3-methoxy-4-(2-methyl-5-thiazolyl)phenyl]-2-(3-methoxyphenyl)-3-methyl-imidazo[1,2-a]pyridin-8-amine,-   N-[4-(2,4-dimethyl-5-oxazolyl)-3-methoxyphenyl]-2-(4-fluorophenyl)-1-methyl-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(1-methyl-1H-pyrazol-5-yl)phenyl]-1-methyl-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(3-methyl-1,2,4-oxadiazol-5-yl)phenyl]-1-methyl-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-1-methyl-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-1-methyl-N-[5-(4-methyl-5-oxazolyl)-2-pyridinyl]-1H-benzimidazol-4-amine,-   N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-1-methyl-2-(3,3,3-trifluoropropyl)-1H-benzimidazol-4-amine,-   N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-2-(3-methoxyphenyl)-1-methyl-1H-benzimidazol-4-amine,-   2-(3-chlorophenyl)-1-methyl-N-[5-(4-methyl-5-oxazolyl)-2-pyridinyl]-1H-benzimidazol-4-amine,-   2-(4-chloro-3-methoxyphenyl)-1-methyl-N-[5-(4-methyl-5-oxazolyl)-2-pyridinyl]-1H-benzimidazol-4-amine,-   2-[4-ethoxy-2-methyl-5-(1-methylethyl)phenyl]-N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-1-methyl-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-N-[4-(2-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   1-(1,1-dimethylethyl)-2-(4-fluorophenyl)-N-[6-(4-methyl-5-oxazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-1-methyl-N-[6-(4-methyl-5-oxazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-1-(1-methylethyl)-N-[4-(2-methyl-5-oxazolyl)phenyl]-1H-benzimidazol-4-amine,-   N-[4-(2-methyl-5-oxazolyl)phenyl]-2-(2-methylphenyl)-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluoro-2-methylphenyl)-N-[6-(4-methyl-5-oxazolyl)-3-pyridinyl]-imidazo[1,2-a]pyridin-8-amine,-   2-(2-fluoro-4-methylphenyl)-N-[6-(4-methyl-5-oxazolyl)-3-pyridinyl]-imidazo[1,2-a]pyridin-8-amine,-   N-[4-(2-methyl-5-oxazolyl)phenyl]-2-[2-methyl-5-(trifluoromethyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   2-(2,4-difluorophenyl)-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-1-methyl-1H-imidazo[4,5-a]pyridin-4-amine,-   1-(2-methoxyethyl)-N-[3-methoxy-4-(2-methyl-5-thiazolyl)phenyl]-2-methyl-1H-benzimidazol-4-amine,-   N-[3-methoxy-4-(2-methyl-5-thiazolyl)phenyl]-2-(2-methylphenyl)-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-1-methyl-N-[4-(2-methyl-5-oxazolyl)phenyl]-1H-imidazo[4,5-a]pyridin-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-1-(1-methylethyl)-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-1-methyl-1H-imidazo[4,5-a]pyridin-4-amine,-   2-(4-fluoro-2-methylphenyl)-N-[4-(2-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   2-(2-fluoro-4-methylphenyl)-N-[4-(2-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-1-methyl-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine,-   2-(2-chlorophenyl)-3-methyl-N-[4-(2-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   2-(5-methoxy-2-methylphenyl)-N-[4-(2-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   2-[(4-fluorophenyl)methyl]-N-[4-(2-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   N-[3-fluoro-4-(2-methyl-5-oxazolyl)phenyl]-2-(4-fluorophenyl)-1-methyl-1H-imidazo[4,5-a]pyridin-4-amine,-   2-(5-fluoro-2-methylphenyl)-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   N-[6-(4-methyl-5-oxazolyl)-3-pyridinyl]-2-[2-methyl-5-(trifluoromethyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   2-(3-methoxyphenyl)-1-(1-methylethyl)-N-[4-(2-methyl-5-oxazolyl)phenyl]-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-1-(1-methylethyl)-N-[5-(2-methyl-5-oxazolyl)-2-pyridinyl]-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-1-methyl-6-(trifluoromethyl)-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-1-(1-methylethyl)-N-[4-(2-methyl-5-oxazolyl)phenyl]-1H-imidazo[4,5-a]pyridin-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-1-(1-methylethyl)-1H-imidazo[4,5-a]pyridin-4-amine,-   N-[3-fluoro-4-(2-methyl-5-oxazolyl)phenyl]-2-(5-methoxy-2-methylphenyl)-imidazo[1,2-a]pyridin-8-amine,-   N-[3-fluoro-4-(2-methyl-5-oxazolyl)phenyl]-2-(4-fluorophenyl)-1-(1-methylethyl)-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-1-(1-methylethyl)-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine,-   2-(2,4-difluorophenyl)-1-methyl-N-[4-(2-methyl-5-oxazolyl)phenyl]-1H-imidazo[4,5-a]pyridin-4-amine,-   2-(2,4-difluorophenyl)-N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-1-methyl-1H-imidazo[4,5-a]pyridin-4-amine,-   2-(2,4-difluorophenyl)-N-[3-fluoro-4-(2-methyl-5-oxazolyl)phenyl]-1-methyl-1H-imidazo[4,5-a]pyridin-4-amine,-   6-fluoro-2-(3-methoxyphenyl)-1-methyl-N-[4-(2-methyl-5-oxazolyl)phenyl]-1H-benzimidazol-4-amine,-   2-(4-fluoro-2-methylphenyl)-N-[4-(2-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyrazin-8-amine,-   2-(4-fluorophenyl)-1,6-dimethyl-N-[4-(2-methyl-5-oxazolyl)phenyl]-1H-imidazo[4,5-a]pyridin-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-1,6-dimethyl-1H-imidazo[4,5-a]pyridin-4-amine,-   6-bromo-2-(4-fluoro-2-methylphenyl)-N-[4-(2-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyrazin-8-amine,-   1-methyl-N-[6-(4-methyl-5-oxazolyl)-3-pyridinyl]-2-(phenoxymethyl)-1H-benzimidazol-4-amine,-   2-(4-chloro-3-methoxyphenyl)-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-1-methyl-1H-benzimidazol-4-amine,-   N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-2-(3-methoxyphenyl)-1-methyl-1H-benzimidazol-4-amine,-   2-(cyclopropylmethyl)-1-ethyl-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-1H-benzimidazol-4-amine,-   N-[3-fluoro-4-(4-methyl-5-oxazolyl)phenyl]-2-(4-fluorophenyl)-1-(1-methylethyl)-1H-benzimidazol-4-amine,-   2-(cyclopropylmethyl)-N-[3-fluoro-4-(2-methyl-5-oxazolyl)phenyl]-1-methyl-1H-imidazo[4,5-a]pyridin-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-5-thiazolyl)phenyl]-1-(1-methylethyl)-1H-benzimidazol-4-amine,-   N-[3-fluoro-4-(2-methyl-5-oxazolyl)phenyl]-2-(3-methoxyphenyl)-1-methyl-1H-imidazo[4,5-a]pyridin-4-amine,-   2-(2,4-difluorophenyl)-N-[3-methoxy-4-(2-methyl-5-thiazolyl)phenyl]-1-methyl-1H-imidazo[4,5-a]pyridin-4-amine,-   N-[3-fluoro-4-(2-methyl-5-oxazolyl)phenyl]-2-(4-fluorophenyl)-3-methyl-3H-imidazo[4,5-b]pyridin-7-amine,-   N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-1-methyl-6-(trifluoromethyl)-2-(3,3,3-trifluoropropyl)-1H-benzimidazol-4-amine,-   N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-2-methyl-6-(trifluoromethyl)-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-1-methyl-N-[4-(1-methyl-1H-pyrazol-4-yl)phenyl]-1H-benzimidazol-4-amine,-   8-[[3-fluoro-4-(2-methyl-5-oxazolyl)phenyl]amino]-N,N-dimethyl-6-(trifluoromethyl)-imidazo[1,2-a]pyridine-2-carboxamide,-   6-fluoro-2-(3-methoxyphenyl)-1-methyl-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine,-   N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-2,3-dimethyl-6-(trifluoromethyl)-imidazo[1,2-a]pyridin-8-amine,-   N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-2-methyl-6-(trifluoromethyl)-imidazo[1,2-a]pyrazin-8-amine,-   6-bromo-2-methyl-N-[4-(2-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyrazin-8-amine,-   8-[[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]amino]-N,N-dimethyl-6-(trifluoromethyl)-imidazo[1,2-a]pyridine-2-carboxamide,-   2-(4-fluorophenyl)-1-methyl-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-6-(trifluoromethyl)-1H-benzimidazol-4-amine,-   1-methyl-2-[(1-methylethoxy)methyl]-N-[4-(2-methyl-5-oxazolyl)phenyl]-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-1-methyl-N-[6-(1-methyl-1H-pyrazol-4-yl)-3-pyridinyl]-1H-benzimidazol-4-amine,-   2,3-dimethyl-N-[4-[2-(1-methylethyl)-5-oxazolyl]phenyl]-imidazo[1,2-a]pyridin-8-amine,-   N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-2,3-dimethyl-imidazo[1,2-a]pyridin-8-amine,-   1-[8-[[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]amino]-6-(trifluoromethyl)imidazo[1,2-a]pyridin-2-yl]-ethanone,-   N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-1-methyl-2-(3,3,3-trifluoropropyl)-1H-imidazo[4,5-a]pyridin-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-1,6-dimethyl-1H-imidazo[4,5-a]pyridin-4-amine,-   8-[[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]amino]-2-methyl-imidazo[1,2-a]pyridine-6-carbonitrile,-   N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-2-methyl-6-(trifluoromethyl)-imidazo[1,2-b]pyridazin-8-amine,-   N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-2-methyl-6-(trifluoromethyl)-imidazo[1,2-b]pyridazin-8-amine,-   6-fluoro-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-1-methyl-2-(1-pyrrolidinyl)-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(1-methyl-1H-1,2,4-triazol-5-yl)phenyl]-1-methyl-1H-benzimidazol-4-amine,-   6-fluoro-1-methyl-N-[4-(2-methyl-5-oxazolyl)phenyl]-2-(1-pyrrolidinyl)-1H-benzimidazol-4-amine,-   6-fluoro-2-(4-fluoro-2-methylphenyl)-N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluoro-2-methylphenyl)-8-[[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]amino]-imidazo[1,2-a]pyridine-6-carbonitrile,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-3-methyl-3H-imidazo[4,5-a]pyridin-7-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-3-methyl-3H-imidazo[4,5-a]pyridin-7-amine,-   N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-2-(3-methoxyphenyl)-1,6-dimethyl-1H-imidazo[4,5-a]pyridin-4-amine,-   1-methyl-2-(4-methyl-5-oxazolyl)-N-[4-(2-methyl-5-oxazolyl)phenyl]-6-(trifluoromethyl)-1H-benzimidazol-4-amine,-   2-(3-methoxyphenyl)-1,6-dimethyl-N-[4-(2-methyl-5-oxazolyl)phenyl]-1H-imidazo[4,5-a]pyridin-4-amine,-   2-(4-fluorophenyl)-1-methyl-N-[5-(2-methyl-5-oxazolyl)-2-pyrimidinyl]-1H-benzimidazol-4-amine,-   N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-2-(3-methoxyphenyl)-1,6-dimethyl-1H-imidazo[4,5-a]pyridin-4-amine,-   2-(3-methoxyphenyl)-1-methyl-4-[[6-(2-methyl-5-oxazolyl)-3-pyridinyl]amino]-1H-benzimidazole-6-carbonitrile,-   N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-2-methyl-imidazo[1,2-a]pyrazin-8-amine,-   6-fluoro-N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-2-(2-methylpropyl)-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-7-[[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]amino]-3-methyl-3H-imidazo[4,5-b]pyridine-5-carbonitrile,-   1-methyl-N-[4-(2-methyl-5-oxazolyl)phenyl]-2-(tetrahydro-2H-pyran-4-yl)-6-(trifluoromethyl)-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-1-methyl-N-[4-(1-methyl-1H-pyrazol-5-yl)phenyl]-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-6-methoxy-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-1-methyl-1H-benzimidazol-4-amine,-   N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-1-(1-methylethyl)-2-(tetrahydro-2H-pyran-4-yl)-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-3,5-dimethyl-3H-imidazo[4,5-b]pyridin-7-amine,-   4-[[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]amino]-2-(3-methoxyphenyl)-1-methyl-1H-benzimidazole-6-carbonitrile,-   2-(4-fluorophenyl)-1-methyl-N-[5-(1-methyl-1H-pyrazol-5-yl)-2-pyridinyl]-1H-benzimidazol-4-amine,-   2-(ethoxymethyl)-N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-6-(trifluoromethyl)-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluoro-2-methylphenyl)-8-[[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]amino]-imidazo[1,2-a]pyridine-6-methanamine,-   N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-1,6-dimethyl-2-(tetrahydro-2H-pyran-4-yl)-1H-imidazo[4,5-a]pyridin-4-amine,-   5-cyclopropyl-2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-3-methyl-3H-imidazo[4,5-b]pyridin-7-amine,-   2-(4-fluorophenyl)-3-(1-methylethenyl)-N-[4-(2-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   6-cyclopropyl-2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-1-methyl-1H-imidazo[4,5-a]pyridin-4-amine,-   2-(4-fluorophenyl)-3-(1-methylethyl)-N-[4-(2-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-4-[[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]amino]-1-methyl-1H-benzimidazole-6-carbonitrile,-   8-[[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]amino]-2-(2-methylpropyl)-imidazo[1,2-a]pyridine-6-carbonitrile,-   N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-1,6-dimethyl-2-[3-(1-methylethoxyl)phenyl]-1H-imidazo[4,5-a]pyridin-4-amine,-   6-fluoro-N-[4-(2-methyl-5-oxazolyl)phenyl]-2-(2-methylpropyl)-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-1-methyl-N-[6-(2-methyl-5-thiazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine,-   6-fluoro-2-(4-fluoro-2-methylphenyl)-N-[4-(2-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluoro-2-methylphenyl)-N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-6-methyl-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-1-methyl-N-[4-(4-methyl-5-oxazolyl)phenyl]-1H-benzimidazol-4-amine,-   2-(3-methoxyphenyl)-3-methyl-N-[4-(4-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   6-fluoro-N⁴-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-N²,1-dimethyl-N²-(2-methylpropyl)-1H-benzimidazole-2,4-diamine,-   N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-2-(tetrahydro-2H-pyran-4-yl)-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-4-[[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]amino]-1-methyl-1H-benzimidazole-6-methanamine,-   N-[6-(4-methyl-5-oxazolyl)-3-pyridinyl]-2-(tetrahydro-2H-pyran-4-yl)-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-1-methyl-4-[[6-(4-methyl-5-oxazolyl)-3-pyridinyl]amino]-1H-benzimidazole-6-carbonitrile,-   6-cyclopropyl-N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-2-methyl-imidazo[1,2-a]pyrazin-8-amine,-   2-(3-chlorophenyl)-1-(1-methylethyl)-N-[6-(4-methyl-5-oxazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-1-(1-methylethyl)-N-[6-(4-methyl-5-oxazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine,-   2-(2-chlorophenyl)-6-fluoro-1-methyl-N-[6-(4-methyl-5-oxazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine,-   2-(2-chlorophenyl)-1-methyl-N-[6-(4-methyl-5-oxazolyl)-3-pyridinyl]-1H-imidazo[4,5-a]pyridin-4-amine,-   N-[4-(2,4-dimethyl-5-oxazolyl)phenyl]-2-(4-fluorophenyl)-1-methyl-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-1-methyl-4-[[6-(2-methyl-5-oxazolyl)-3-pyridinyl]amino]-1H-benzimidazole-6-carbonitrile,-   6-fluoro-2-(4-fluoro-2-methylphenyl)-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-imidazo[1,2-a]pyridin-8-amine,-   2-(2-chlorophenyl)-1-methyl-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-1H-imidazo[4,5-a]pyridin-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-3-methyl-5-(1-methylethyl)-3H-imidazo[4,5-b]pyridin-7-amine,-   6-fluoro-2-(4-fluorophenyl)-1-methyl-N-[6-(4-methyl-5-oxazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine,-   6-fluoro-2-(4-fluorophenyl)-1-methyl-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine,-   2-(2-chlorophenyl)-6-fluoro-1-methyl-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine,-   6-chloro-N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-2-(tetrahydro-2H-pyran-4-yl)-imidazo[1,2-a]pyridin-8-amine,-   2-(5-chloro-2-thienyl)-1-(1-methylethyl)-N-[6-(4-methyl-5-oxazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine,-   N-[6-(2,4-dimethyl-5-oxazolyl)-3-pyridinyl]-2-(4-fluorophenyl)-1-(1-methylethyl)-1H-benzimidazol-4-amine,-   2-(2-chlorophenyl)-N-[6-(2,4-dimethyl-5-oxazolyl)-3-pyridinyl]-6-fluoro-1-methyl-1H-benzimidazol-4-amine,-   N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-3-(3-methoxypropyl)-2-[2-(trifluoromethyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-3-methyl-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-3H-imidazo[4,5-a]pyridin-7-amine,-   2-(4-fluorophenyl)-3-iodo-N-[4-(2-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   3-methyl-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-2-[2-(trifluoromethyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   8-[[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]amino]-2-(2-methylpropyl)-imidazo[1,2-a]pyridine-6-carboxylic    acid methyl ester,-   N-[4-(2,4-dimethyl-5-oxazolyl)-3-methoxyphenyl]-2-(4-fluorophenyl)-1-(1-methylethyl)-1H-benzimidazol-4-amine,-   N-[4-(2,4-dimethyl-5-oxazolyl)phenyl]-2-(4-fluorophenyl)-1-(1-methylethyl)-1H-benzimidazol-4-amine,-   2-cyclopropyl-N-[6-(4-methyl-5-oxazolyl)-3-pyridinyl]-imidazo[1,2-a]pyridin-8-amine,-   2-cyclopropyl-N-[4-(2-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   6-fluoro-2-(4-fluorophenyl)-1-(1-methylethyl)-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine,-   6-fluoro-N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-2-(tetrahydro-2H-pyran-4-yl)-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-3-(methoxymethyl)-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   2-[1-(4-chlorophenyl)cyclopropyl]-1-methyl-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine,-   N-[6-(4-methyl-5-oxazolyl)-3-pyridinyl]-2-[(tetrahydro-2H-pyran-4-yl)methyl]-imidazo[1,2-a]pyridin-8-amine,-   2-[1-(4-chlorophenyl)ethyl]-1-methyl-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine,-   2-(2-chlorophenyl)-N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-1,6-dimethyl-1H-imidazo[4,5-a]pyridin-4-amine,-   2-(2-chlorophenyl)-1,6-dimethyl-N-[6-(4-methyl-5-oxazolyl)-3-pyridinyl]-1H-imidazo[4,5-a]pyridin-4-amine,-   6-chloro-2-(5-fluoro-2-methylphenyl)-N-[6-(5-methyl-4-oxazolyl)-3-pyridinyl]-imidazo[1,2-b]pyridazin-8-amine,-   1-[8-[[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]amino]-2-(2-methylpropyl)imidazo[1,2-a]pyridin-6-yl]-ethanone,-   2-(4-fluorophenyl)-3-(2-methoxyethyl)-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-N-[4-[2-(methoxymethyl)-5-oxazolyl]phenyl]-1-(1-methylethyl)-1H-benzimidazol-4-amine,-   2-(2-chlorophenyl)-3-methyl-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-imidazo[1,2-a]pyridin-8-amine,-   2-methyl-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-3-methyl-5-(1-methylethyl)-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-3H-imidazo[4,5-b]pyridin-7-amine,-   2-(4-fluorophenyl)-3-methoxy-N-[6-(4-methyl-5-oxazolyl)-3-pyridinyl]-imidazo[1,2-a]pyridin-8-amine,-   2-(5-fluoro-2-methylphenyl)-N-[6-(4-methyl-5-oxazolyl)-3-pyridinyl]-imidazo[1,2-b]pyridazin-8-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(1-methyl-1H-1,2,3-triazol-4-yl)phenyl]-1-methyl-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-2H-1,2,3-triazol-4-yl)phenyl]-1-methyl-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-4-pyridinyl)phenyl]-1-methyl-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-4-pyridinyl)phenyl]-1,6-dimethyl-1H-imidazo[4,5-a]pyridin-4-amine,-   2-(4-fluorophenyl)-1-methyl-N-[4-(2-methyl-4-pyridinyl)phenyl]-1H-benzimidazol-4-amine,-   2-(2-chlorophenyl)-N-[3-methoxy-4-(2-methyl-4-pyridinyl)phenyl]-3-methyl-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-4-pyridinyl)phenyl]-1-(1-methylethyl)-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-1,6-dimethyl-N-[4-(2-methyl-4-pyridinyl)phenyl]-1H-imidazo[4,5-a]pyridin-4-amine,-   2-(4-fluorophenyl)-1-(1-methylethyl)-N-[4-(2-methyl-4-pyridinyl)phenyl]-1H-benzimidazol-4-amine,-   2-(2-chlorophenyl)-3-methyl-N-[4-(2-methyl-4-pyridinyl)phenyl]-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-N-(2-methoxy-2′-methyl[3,4′-bipyridin]-6-yl)-1-(1-methylethyl)-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-N-(2-methoxy-2′-methyl[3,4′-bipyridin]-6-yl)-1-methyl-1H-benzimidazol-4-amine,-   2-(2-chlorophenyl)-N-(2-methoxy-2′-methyl[3,4′-bipyridin]-6-yl)-3-methyl-imidazo[1,2-a]pyridin-8-amine,-   2-(4-fluorophenyl)-N-[6-methoxy-5-(1-methyl-1H-pyrazol-4-yl)-2-pyridinyl]-1-(1-methylethyl)-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-N-[6-methoxy-5-(1-methyl-1H-pyrazol-4-yl)-2-pyridinyl]-1-methyl-1H-benzimidazol-4-amine,-   N-[4-(2,6-dimethyl-4-pyridinyl)phenyl]-2-(4-fluorophenyl)-1-(1-methylethyl)-1H-benzimidazol-4-amine,-   N-[3-fluoro-4-(2-methyl-4-pyridinyl)phenyl]-2-(4-fluorophenyl)-1-methyl-1H-benzimidazol-4-amine,-   N-[3-fluoro-4-(2-methyl-4-pyridinyl)phenyl]-2-(4-fluorophenyl)-1-(1-methylethyl)-1H-benzimidazol-4-amine,-   2-(2-chlorophenyl)-N-[3-fluoro-4-(2-methyl-4-pyridinyl)phenyl]-3-methyl-imidazo[1,2-a]pyridin-8-amine,-   N-[3-fluoro-4-(2-methyl-4-pyridinyl)phenyl]-2-(4-fluorophenyl)-1,6-dimethyl-1H-imidazo[4,5-a]pyridin-4-amine,-   2-(4-fluorophenyl)-1-methyl-N-[6-(2-methyl-4-pyridinyl)-3-pyridazinyl]-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-1,6-dimethyl-N-[6-(2-methyl-4-pyridinyl)-3-pyridazinyl]-1H-imidazo[4,5-a]pyridin-4-amine,    and-   2-(4-fluorophenyl)-1-methyl-N-[4-(4-pyridinyl)phenyl]-1H-benzimidazol-4-amine,    including any stereochemically isomeric form thereof,    and the pharmaceutically acceptable addition salts and the solvates    thereof.

In an embodiment preferably said compound of Formula (I) is2-(4-fluorophenyl)-N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-1-methyl-1H-benzimidazol-4-amine,including any stereochemically isomeric forms thereof, and thepharmaceutically acceptable addition salts and the solvates thereof.

In an embodiment preferably said compound of Formula (I) is2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-1-methyl-1H-benzimidazol-4-amine,including any stereochemically isomeric forms thereof, and thepharmaceutically acceptable addition salts and the solvates thereof.

In an embodiment preferably said compound of Formula (I) is2-(4-fluorophenyl)-1-(1-methylethyl)-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine,including any stereochemically isomeric forms thereof, and thepharmaceutically acceptable addition salts and the solvates thereof.

In an embodiment preferably said compound of Formula (I) is2-(4-fluorophenyl)-1-(1-methylethyl)-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine.

In an embodiment the compound of Formula (I) is selected from the groupconsisting of:

-   2-(4-fluorophenyl)-1-(1-methylethyl)-N-[6-(2-methyl-5-oxazolyl)-3-pyridinyl]-1H-benzimidazol-4-amine,-   6-fluoro-N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-2-(2-methylpropyl)-imidazo[1,2-a]pyridin-8-amine    HCl,-   2-(4-fluorophenyl)-6-methoxy-N-[3-methoxy-4-(2-methyl-5-oxazolyl)phenyl]-1-methyl-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(4-methyl-5-oxazolyl)phenyl]-1-methyl-1H-benzimidazol-4-amine,-   2-(4-fluorophenyl)-N-[3-methoxy-4-(2-methyl-4-pyridinyl)phenyl]-1-(1-methylethyl)-1H-benzimidazol-4-amine,    including any stereochemically isomeric forms thereof, and the    pharmaceutically acceptable addition salts and the solvates thereof.

In the passages above, the features of an embodiment can be combinedwith the features of another embodiment or combinations of embodiments.

The present invention also encompasses processes for the preparation ofcompounds of Formula (I) and subgroups thereof. In the reactionsdescribed, it can be necessary to protect reactive functional groups,for example hydroxy, amino, or carboxy groups, where these are desiredin the final product, to avoid their unwanted participation in thereactions. Conventional protecting groups can be used in accordance withstandard practice, for example, see T. W. Greene and P. G. M. Wuts in“Protective Groups in Organic Chemistry”, John Wiley and Sons, 1999.

The compounds of Formula (I) and the subgroups thereof can be preparedby a succession of steps as described hereunder. They are generallyprepared from starting materials which are either commercially availableor prepared by standard means obvious to those skilled in the art. Thecompounds of the present invention can be also prepared using standardsynthetic processes commonly used by those skilled in the art of organicchemistry.

The general preparation of some typical examples is shown below:

Experimental Procedure 1

In general, compounds of formula (I), can be prepared as set out belowin Scheme 1 wherein all variables are defined as hereabove:

Compounds of formula (I) can be prepared via a coupling reaction betweenintermediates of formula (II-a) and (III-a) or between intermediates offormula (II-b) and (III-b), wherein Halo is defined as Cl, Br or I andwherein all other variables are as defined hereinbefore. This reactionmay be performed in the presence of a suitable base such as, forexample, Cs₂CO₃ or sodium tert-butoxide. The reaction can be performedin a reaction-inert solvent such as, for example, toluene,N,N-dimethylformamide (DMF), tert-butanol or dioxane. The reactiontypically is performed in the presence of a catalyst system comprisingof a suitable catalyst such as palladium(II) acetate (Pd(OAc)₂) ortris(dibenzylideneacetone)dipalladium (Pd₂(dba)₃) and a ligand such as(9,9-dimethyl-9H-xanthene-4,5-diyl)bis[diphenylphosphine] (Xantphos),[1,1′-binaphthalene]-2,2′-diylbis[diphenylphosphine] (BINAP), ordicyclohexyl[2′,4′,6′-tris(1-methylethyl)[1,1′-biphenyl]-2-yl]-phosphine(X-phos). Preferably this reaction is carried out under an inertatmosphere, such as a nitrogen or an argon atmosphere. Reaction rate andyield may be enhanced by microwave assisted heating.

In an alternative procedure, that is only valid when Y¹, Y³, Z¹ or Z³ isN in the definition of Het², a compound of formula (I) wherein Y¹, Y³,Z¹ or Z³ is N, can be prepared via an aromatic nucleophilic substitutionbetween intermediates of formula (II-a) and (III-a). This reaction maybe performed in the presence of a suitable base such as, for example,K₂CO₃ or diisopropylethylamine. The reaction can be performed in areaction-inert solvent such as, for example, DMF or CH₃CN. This reactionmay also be performed under acidic conditions, for example, in thepresence of HCl or methanesulfonic acid. This reaction can be performedin a reaction-inert solvent such as, for example, 2-propanol. Reactionrate and yield may be enhanced by microwave assisted heating.

Experimental Procedure 2

Compounds of formula (I), can also be prepared via a coupling reactionbetween an intermediate of formula (IV) and an intermediate of formula(V) according to Scheme 2 wherein Halo is defined as Cl, Br or I andwherein all other variables are as defined before.

In Scheme 2, intermediate of formula (V) may be commercially availableor may be prepared according to conventional reaction proceduresgenerally know in the art. The coupling reaction is performed in thepresence of a suitable base such as, for example, Cs₂CO₃, Na₂CO₃ orNaOH. The reaction can be performed in a reaction-inert solvent such as,for example, toluene, DMF or dioxane. The reaction typically isperformed in the presence of a catalyst such astetrakis(triphenylphosphine)palladium (Pd(PPh₃)₄). Stirring, elevatedtemperatures (for example between 70-140° C.) and/or pressure mayenhance the rate of the reaction. Preferably this reaction is carriedout under an inert atmosphere, such as a nitrogen or argon atmosphere.

Alternatively, the boronic acid picanol ester derivative of formula (V)can be replaced by the corresponding boronic acid derivative.

Experimental Procedure 3

Alternatively compounds of formula (I), can also be prepared via acoupling reaction between an intermediate of formula (VI) and anintermediate of formula (VII) according to Scheme 3 wherein Halo isdefined as Cl, Br or I and wherein all other variables are as definedbefore.

In Scheme 3 intermediates of formula (VII) may be commercially availableor may be prepared according to conventional reaction proceduresgenerally know in the art. The reaction conditions are analogous to thereaction conditions described in experimental procedure 2.

Experimental Procedure 4

An intermediate of formula (II-a) can be prepared by reduction of anintermediate of formula (VIII) as is shown in Scheme 4, wherein allvariables are as defined before.

The reduction of (VIII) to (II-a) can be conducted by conventionalmethods such as, for example, a reductive hydrogenation or reductionwith a metal or a metal salt and an acid [for example a metal such asiron or a metal salt such as SnCl₂ and acid such as an inorganic acid(hydrochloric acid, sulfuric acid or the like) or an organic acid(acetic acid or the like)], or other well-known methods for converting anitro-group to the corresponding amine

Experimental Procedure 5

An intermediate of formula (VIII) wherein Het¹ is restricted to oxazolesubstituted with R⁰ in the 4-position, hereby named intermediate offormula (XI), can be prepared by a condensation reaction of anintermediate of formula (X) with an intermediate of formula (IX) as isillustrated in Scheme 5. Intermediate (IX) may be commercially availableor may be prepared according to conventional reaction proceduresgenerally know in the art. This condensation reaction is performed inthe presence of a suitable base such as, for example, K₂CO₃ or sodiumethoxide (NaOEt). The reaction can be performed in a protic solvent suchas, for example, methanol (MeOH) or ethanol (EtOH). Stirring and/orelevated temperatures (for example between 70-110° C.) may enhance therate of the reaction. In Scheme 5, all variables are defined asmentioned hereabove.

Alternatively, the reaction described in Scheme 5 may also be performedwith a benzaldehyde derivative of the intermediate of formula (IX)wherein NO₂ is replaced by Cl, Br, I, or NH-Het².

Experimental Procedure 6

An intermediate of formula (II-a) can also be prepared by conversion ofthe Halo-substitutent in an intermediate of formula (II-b) into anamino-group, or a masked or protected amino functionality which cansubsequently be converted into an amino-group, according to Scheme 6 byusing reaction conditions well known to those skilled in the art. InScheme 6, Halo is defined as Cl, Br or I, and all other variables aredefined as mentioned hereabove.

The intermediate of formula (II-b), wherein Het¹ is limited to oxazolesubstituted with R⁰, hereby named intermediate of formula (XII-b), canbe prepared according to the synthesis protocol that was used for thesynthesis of intermediate (XI), starting from an intermediate of formula(XII):

The intermediate of formula (XII) is commercially available or may beprepared according to conventional reaction procedures generally knownin the art.

Experimental Procedure 7

An intermediate of formula (VIII) wherein Het¹ is restricted to oxazolesubstituted with R¹ in the 2-position and CH₃ in the 4-position, herebynamed an intermediate of formula (XIII), can be prepared by acondensation reaction of an intermediate of formula (XIV) with anintermediate of formula (IX) according to Scheme 7 wherein all variablesare defined as hereinbefore. Both intermediates may be commerciallyavailable or may be prepared according to conventional reactionprocedures generally know in the art. This condensation reactiontypically can be performed in a solvent such as pyridine. Stirringand/or elevated temperatures (for example between 70-110° C.) mayenhance the rate of the reaction.

Experimental Procedure 8

An intermediate of formula (IV) can be prepared via a coupling reactionbetween an intermediate of formula (XV) and an intermediate of formula(III-a), as is shown in Scheme 8 wherein Halo is defined as Cl, Br or Iand wherein all other variables are defined as hereinbefore. Thisreaction may be performed in analogy to the synthesis protocol describedin Experimental procedure 1.

Experimental Procedure 9

An intermediate of formula (VIII) wherein Het¹ is restricted as shown inScheme 9, hereby named an intermediate of formula (XVIII), can beprepared by condensation of an intermediate of formula (XVII) with anintermediate of formula (XVI) which is activated with iodobenzenediacetate in the presence of trifluoromethanesulfonic acid. Stirringand/or elevated temperatures (for example between 70-100° C.) mayenhance the rate of reaction. In Scheme 9, R^(1a) is defined asC₁₋₄alkyl and all other variables in are defined as hereinbefore.

An intermediate of formula (XVIII) wherein NO₂ is replaced by Cl or Br,can be prepared from an intermediate of formula (XVI) wherein NO₂ isreplaced by the corresponding halogen (Cl or Br respectively).

Experimental Procedure 10

An intermediate of formula (VIII) wherein Het¹ is restricted as shown inScheme 10, hereby named an intermediate of formula (XXI), can beprepared via the condensation of an intermediate of formula (XIX) withan intermediate of formula (XX) as shown in Scheme 10 wherein allvariables are as defined before. Typically the reaction can be performedin acetic acid. Stirring and/or elevated temperatures (up to 90° C.) mayenhance the rate of the reaction.

Experimental Procedure 11

An intermediate of formula (XIX) can be prepared by the condensation ofdimethylformamide dimethyl acetal (DMF-DMA) with an intermediate offormula (XVI) as depicted in Scheme 11. Stirring and/or elevatedtemperatures (for example between 70-110° C.) may enhance the rate ofthe reaction.

Experimental Procedure 12

An intermediate of formula (III-a) wherein Het² is restricted to resultin an intermediate of formula (XXIV), can be prepared via a condensationreaction between an intermediate of formula (XXII) and an intermediateof formula (XXIII) as is illustrated in Scheme 12, wherein Halo isrestricted to Br and Cl, and wherein all other variables are defined ashereabove. The reaction may be performed in a reaction-inert solventsuch as, for example, EtOH or n-butanol, or by mixing the reagentswithout the presence of a solvent. The reaction may conveniently becarried out at elevated temperatures ranging between 50° C. and thereflux temperature of the reaction mixture. Reaction rate and yield maybe enhanced by microwave assisted heating.

Experimental Procedure 13

An intermediate of formula (III-a) wherein Het² is restricted to resultin an intermediate of formula (XXVII) wherein R^(6b) is carbon-linked tothe benzimidazole heterocycle, can be prepared by an acylation of anintermediate of formula (XXV) with an intermediate of formula (XXVI)followed by a condensation reaction to yield (XXVII), according toScheme 13 wherein Halo is restricted to Br, Cl and I and wherein allother substituents are as defined hereinbefore. The acylation reactioncan be carried out in a solvent such as pyridine or a reaction inertsolvent such as DMF in the presence of a base such as triethylamine(Et₃N). The subsequent condensation reaction can be carried out byheating the crude acylated product in a solvent such as acetic acid.

Experimental Procedure 14

Alternatively, an intermediate of formula (XXVII) wherein R^(6b) iscarbon-linked to the benzimidazole heterocycle can also be prepared bytreatment of an intermediate (XXV) with an aldehyde of formula (XXVIII).The reaction can be performed in the presence of sodium metabisulfite ina reaction inert solvent such as N,N-dimethylacetamide (DMA) accordingto Scheme 14 wherein Halo is restricted to Br, Cl and I and wherein allother substituents are as defined hereinbefore.

Experimental Procedure 15

Alternatively, an intermediate of formula (XXVII) wherein R iscarbon-linked to the benzimidazole heterocycle can also be prepared bytreatment of an intermediate (XXIX) with an aldehyde of formula (XXVIII)in the presence of sodium dithionite in a reaction inert solvent such asEtOH according to Scheme 15 wherein Halo is restricted to Br, Cl and Iand wherein all other substituents are as defined hereinbefore.

For an intermediate of formula (XXVII) wherein R⁷ is H, an alternativeR⁷ can be introduced via N-alkylation, leading predominantly to anintermediate of formula (XXVII) wherein R⁷ is a substituent as definedbefore, except hydrogen.

Experimental Procedure 16

An intermediate of formula (XXV) can be prepared via reduction of anintermediate (XXIX) as shown in Scheme 16 below, wherein Halo isrestricted to Br, Cl and I and wherein all other substituents are asdefined hereinbefore. The reduction of (XXIX) to (XXV) can be conductedby a conventional method such as, for example, a reductive hydrogenationor reduction with a metal or a metal salt and an acid [for example ametal such as iron, or a metal salt such as SnCl₂ and acid such as aninorganic acid (hydrochloric acid, sulfuric acid or the like) or anorganic acid (acetic acid or the like)], or other well-known methods forconverting a nitro-group to the corresponding amine

Experimental Procedure 17

An intermediate of formula (XXIX) can be prepared via a substitutionreaction of an intermediate of formula (XXX) with an intermediate offormula (XLV) as is shown in Scheme 17 below, wherein Halo is restrictedto Br, Cl and I, Halo-b is defined as F, Cl, or Br, and wherein allother substituents are as defined hereinbefore. Intermediates of formula(XLV) are commercially available or may be prepared according toconventional reaction procedures generally known in the art.

Experimental Procedure 18

An intermediate of formula (VIII), can be prepared via a couplingreaction between intermediates of formula (XXXI-a) and (XXXII-a) orbetween intermediates of formula (XXXI-b) and (XXXII-b). This reactionis shown in Scheme 18 wherein Halo is restricted to Br, Cl and I andwherein all other variables are defined as hereinbefore. In Scheme 18,intermediates of formula (XXXI-a), (XXXI-b), (XXXII-a) and (XXXII-b) maybe commercially available or may be prepared according to conventionalreaction procedures generally know in the art. The coupling reaction isperformed in the presence of a suitable base such as, for example,Cs₂CO₃, Na₂CO₃ or NaOH. The reaction can be performed in areaction-inert solvent such as, for example, toluene, DMF ortetrahydrofuran (THF). The reaction typically is performed in thepresence of a catalyst system comprising of a suitable catalyst such aspalladium(II) acetate (Pd(OAc)₂) and a ligand such astriphenylphosphine. Stirring, elevated temperatures (for example between70-140° C.) and/or pressure may enhance the rate of the reaction.Preferably this reaction is carried out under an inert atmosphere, suchas a nitrogen or argon atmosphere. Instead of boronic acids (XXXII-a) or(XXXI-b), the corresponding boronate esters, such as pinacol esters canbe used.

Experimental Procedure 19

An intermediate of formula (XVI) can be prepared via a coupling reactionbetween an intermediate of formula (XXXI-a) andtributyl(1-ethoxyvinyl)tin according to Scheme 19 wherein Halo isdefined as Br, Cl or I and wherein all other variables are as definedbefore. In Scheme 19, an intermediate of formula (XXXI-a) may becommercially available or may be prepared according to conventionalreaction procedures generally know in the art. The reaction can beperformed in a reaction-inert solvent such as, for example, toluene orDMF. The reaction typically is performed in the presence of a catalystsuch as Pd(PPh₃)₄. Stirring, elevated temperatures (for example between70-140° C.) and/or pressure may enhance the rate of the reaction.Preferably this reaction is carried out under an inert atmosphere, suchas a nitrogen or an argon atmosphere. Subsequently, the obtained ethanolcan be hydrolysed in acidic conditions such as, for example, by usinghydrochloric acid, to yield the acetyl derivative of formula (XVI).

Experimental Procedure 20

An intermediate of formula (XXXV) can be prepared via a condensationreaction between an intermediate of formula (XXXIV) and an intermediateof formula (XXXIII) as shown in Scheme 20 wherein R^(1a) is defined asC₁₋₄alkyl and wherein all other substituents are defined as hereabove.The reaction can be performed in a solvent such as, for example,pyridine. Stirring, elevated temperatures (for example between 70 and100° C.) may enhance the rate of the reaction.

Experimental Procedure 21

An intermediate of formula (XXXIV) can be prepared via an activationreaction of an intermediate of formula (XXXVI) as is shown in Scheme 21wherein all variables are defined as hereabove. The reaction can beperformed in a reaction-inert solvent such as, for example, chloroform,in the presence of DMF. The reaction typically is performed in thepresence of an activating reagent such as, for example, SOCl₂. Stirring,elevated temperatures (for example between 50 and 80° C.) may enhancethe rate of the reaction.

Experimental Procedure 22

An intermediate of formula (XXXIX) can be prepared via a couplingreaction between an intermediate of formula (XXXVII) and an intermediateof formula (XXXVIII) according to Scheme 22 wherein Halo is defined as Ior Br, and wherein all other variables are defined as before. In Scheme22, intermediates of formula (XXXVII) and (XXXVIII) may be commerciallyavailable or may be prepared according to conventional reactionprocedures generally know in the art. The coupling reaction is performedin the presence of a suitable base such as, for example, Cs₂CO₃, orAg₂CO₃. The reaction can be performed in a reaction-inert solvent suchas, for example, H₂O, CH₃CN or DMF. The reaction typically is performedin the presence of a catalyst system comprising of a suitable catalystsuch as palladium(II) acetate (Pd(OAc)₂) or1.1-bis(diphenylphosphinoferrocenedichloropalladiumII) (Pd(dppf)Cl₂),and a ligand such as triphenylphosphine. Stirring, elevated temperatures(for example between 60 an 140° C.) may enhance the rate of thereaction.

Experimental Procedure 23

An intermediate of formula (XLI) can be prepared via a decarboxylationreaction of a compound of formula (XL) as depicted in Scheme 23 whereinHalo is defined as Br, I or Cl, and wherein all other variables aredefined as hereinabove. The reaction can be performed in a solvent suchas quinoline or DMF in the presence of copper(II) oxide (CuO). Thereaction typically requires high temperature (up to 150° C.).

Experimental Procedure 24

An intermediate of formula (XL) can be prepared via hydrolysis of thecarboxylic ester function of a compound of formula (XLII) as depicted inScheme 24 wherein Halo is defined as Br, I or Cl, and wherein all othervariables are defined as before. This reaction can be performed eitherin acidic conditions or in basic conditions. It will be preferablyperformed in basic conditions in the presence of a base such as NaOH orLiOH in a mixture of dioxane and water at room temperature.

Experimental Procedure 25

An intermediate of formula (XLII) can be prepared via a couplingreaction between an intermediate of formula (XLIII) and an intermediateof formula (XLIV) as depicted in Scheme 25 wherein Halo is defined asBr, I or Cl, wherein Halo-c is defined as Br or I, and wherein all othervariables are defined as hereinbefore. Intermediates of formula (XLIII)and (XLIV) may be commercially available or may be prepared according toconventional reaction procedures generally know in the art. The couplingreaction is performed in the presence of a suitable base such as, forexample, Cs₂CO₃ or Ag₂CO₃. The reaction can be performed in areaction-inert solvent such as, for example, CH₃CN, toluene or DMF. Thereaction typically is performed in the presence of a catalyst systemcomprising of a suitable catalyst such as palladium(II) acetate(Pd(OAc)₂) or[1,1′-Bis(diphenylphosphino)ferrocene]dichloropalladium(II)(Pd(dppf)Cl₂), and a ligand such as, for instance, triphenylphosphine ortri-o-toluylphosphine. Stirring, elevated temperatures (for examplebetween 60 an 140° C.) may enhance the rate of the reaction.

Where necessary or desired, any one or more of the following furthersteps in any order may be performed:

Compounds of Formula (I), any subgroup thereof, addition salts,solvates, and stereochemical isomeric forms thereof can be convertedinto further compounds according to the invention using procedures knownin the art. In a particular case, a compound of formula (I), whereinR^(4a) or R^(4b) is defined as Cl, Br or I can be further derivatized toa compound of formula (I) wherein R^(4a) or R^(4b) is H, under reductiveconditions well known by those skilled in the art.

It will be appreciated by those skilled in the art that in the processesdescribed above the functional groups of intermediate compounds may needto be blocked by protecting groups. In case the functional groups ofintermediate compounds were blocked by protecting groups, they can bedeprotected after a reaction step.

Pharmacology

It has been found that the compounds of the present invention modulatethe γ-secretase activity. The compounds according to the invention andthe pharmaceutically acceptable compositions thereof are thereforeuseful in the treatment or prevention of Alzheimer's disease (AD),traumatic brain injury, mild cognitive impairment (MCI), senility,dementia, dementia with Lewy bodies, cerebral amyloid angiopathy,multi-infarct dementia, Down's syndrome, dementia associated withParkinson's disease and dementia associated with beta-amyloid,preferably Alzheimer's disease.

As used herein, the term “modulation of γ-secretase activity” refers toan effect on the processing of APP by the γ-secretase-complex.Preferably it refers to an effect in which the overall rate ofprocessing of APP remains essentially as without the application of saidcompounds, but in which the relative quantities of the processedproducts are changed, more preferably in such a way that the amount ofthe Aβ42-peptide produced is reduced. For example a different Abetaspecies can be produced (e.g. Abeta-38 or other Abeta peptide species ofshorter amino acid sequence instead of Abeta-42) or the relativequantities of the products are different (e.g. the ratio of Abeta-40 toAbeta-42 is changed, preferably increased).

It has been previously shown that the γ-secretase complex is alsoinvolved in the processing of the Notch-protein. Notch is a signalingprotein which plays a crucial role in developmental processes (e.g.reviewed in Schweisguth F (2004) Curr. Biol. 14, R129). With respect tothe use of γ-secretase modulators in therapy, it seems particularlyadvantageous not to interfere with the Notch-processing activity of theγ-secretase activity in order to avoid putative undesired side-effects.While γ-secretase inhibitors show side effects due to concomitantinhibition of Notch processing, γ-secretase modulators may have theadvantage of selectively decreasing the production of highlyaggregatable and neurotoxic forms of Aβ, i.e. Aβ42, without decreasingthe production of smaller, less aggregatable forms of Aβ, i.e. Aβ38 andwithout concomitant inhibition of Notch processing. Thus, compounds arepreferred which do not show an effect on the Notch-processing activityof the γ-secretase-complex.

As used herein, the term “treatment” is intended to refer to allprocesses, wherein there may be a slowing, interrupting, arresting, orstopping of the progression of a disease, but does not necessarilyindicate a total elimination of all symptoms.

The invention relates to a compound according to the general Formula(I), the stereoisomeric forms thereof and the pharmaceuticallyacceptable acid or base addition salts and the solvates thereof, for useas a medicament.

The invention also relates to a compound according to the generalFormula (I), the stereoisomeric forms thereof and the pharmaceuticallyacceptable acid or base addition salts and the solvates thereof, for thetreatment or prevention of diseases or conditions selected fromAlzheimer's disease (AD), traumatic brain injury, mild cognitiveimpairment (MCI), senility, dementia, dementia with Lewy bodies,cerebral amyloid angiopathy, multi-infarct dementia, or Down's syndrome.

In an embodiment, said disease or condition is selected from Alzheimer'sdisease, mild cognitive impairment, senility, dementia, dementia withLewy bodies, cerebral amyloid angiopathy, multi-infarct dementia, orDown's syndrome.

In an embodiment, said disease or condition is preferably Alzheimer'sdisease.

The invention also relates to a compound according to the generalFormula (I), the stereoisomeric forms thereof and the pharmaceuticallyacceptable acid or base addition salts and the solvates thereof, for thetreatment of said diseases.

The invention also relates to a compound according to the generalformula (I), the stereoisomeric forms thereof and the pharmaceuticallyacceptable acid or base addition salts and the solvates thereof, for thetreatment or prevention, in particular treatment, of γ-secretasemediated diseases or conditions.

The invention also relates to the use of a compound according to thegeneral Formula (I), the stereoisomeric forms thereof and thepharmaceutically acceptable acid or base addition salts and the solvatesthereof, for the manufacture of a medicament.

The invention also relates to the use of a compound according to thegeneral Formula (I), the stereoisomeric forms thereof and thepharmaceutically acceptable acid or base addition salts and the solvatesthereof, for the manufacture of a medicament for the modulation ofγ-secretase activity.

The invention also relates to the use of a compound according to thegeneral Formula (I), the stereoisomeric forms thereof and thepharmaceutically acceptable acid or base addition salts and the solvatesthereof, for the manufacture of a medicament for the treatment orprevention of any one of the disease conditions mentioned hereinbefore.

The invention also relates to the use of a compound according to thegeneral Formula (I), the stereoisomeric forms thereof and thepharmaceutically acceptable acid or base addition salts and the solvatesthereof, for the manufacture of a medicament for the treatment of anyone of the disease conditions mentioned hereinbefore.

In the invention, particular preference is given to compounds of Formula(I), or any subgroup thereof with a IC₅₀ value for the inhibition of theproduction of Aβ42-peptide of less than 1000 nM, preferably less than100 nM, more preferably less than 50 nM, even more preferably less than20 nM as determined by a suitable assay, such as the assays used in theExamples below.

The compounds of the present invention can be administered to mammals,preferably humans for the treatment or prevention of any one of thediseases mentioned hereinbefore.

In view of the utility of the compound of Formula (I), there is provideda method of treating warm-blooded animals, including humans, sufferingfrom or a method of preventing warm-blooded animals, including humans,to suffer from any one of the diseases mentioned hereinbefore.

Said methods comprise the administration, i.e. the systemic or topicaladministration, preferably oral administration, of an effective amountof a compound of Formula (I), a stereoisomeric form thereof and apharmaceutically acceptable addition salt or solvate thereof, towarm-blooded animals, including humans.

Those of skill in the treatment of such diseases could determine theeffective therapeutic daily amount from the test results presentedhereinafter. An effective therapeutic daily amount would be from about0.005 mg/kg to 50 mg/kg, in particular 0.01 mg/kg to 50 mg/kg bodyweight, more in particular from 0.01 mg/kg to 25 mg/kg body weight,preferably from about 0.01 mg/kg to about 15 mg/kg, more preferably fromabout 0.01 mg/kg to about 10 mg/kg, even more preferably from about 0.01mg/kg to about 1 mg/kg, most preferably from about 0.05 mg/kg to about 1mg/kg body weight. The amount of a compound according to the presentinvention, also referred to here as the active ingredient, which isrequired to achieve a therapeutically effect will of course, vary oncase-by-case basis, for example with the particular compound, the routeof administration, the age and condition of the recipient, and theparticular disorder or disease being treated.

A method of treatment may also include administering the activeingredient on a regimen of between one and four intakes per day. Inthese methods of treatment the compounds according to the invention arepreferably formulated prior to administration. As described hereinbelow, suitable pharmaceutical formulations are prepared by knownprocedures using well known and readily available ingredients.

The compounds of the present invention, that are suitable to treat orprevent Alzheimer's disease or the symptoms thereof, may be administeredalone or in combination with one or more additional therapeutic agents.Combination therapy includes administration of a single pharmaceuticaldosage formulation which contains a compound of Formula (I) and one ormore additional therapeutic agents, as well as administration of thecompound of Formula (I) and each additional therapeutic agents in itsown separate pharmaceutical dosage formulation. For example, a compoundof Formula (I) and a therapeutic agent may be administered to thepatient together in a single oral dosage composition such as a tablet orcapsule, or each agent may be administered in separate oral dosageformulations.

While it is possible for the active ingredient to be administered alone,it is preferable to present it as a pharmaceutical composition.

Accordingly, the present invention further provides a pharmaceuticalcomposition comprising a pharmaceutically acceptable carrier and, asactive ingredient, a therapeutically effective amount of a compoundaccording to Formula (I).

The carrier or diluent must be “acceptable” in the sense of beingcompatible with the other ingredients of the composition and notdeleterious to the recipients thereof.

For ease of administration, the subject compounds may be formulated intovarious pharmaceutical forms for administration purposes. The compoundsaccording to the invention, in particular the compounds according toFormula (I), a pharmaceutically acceptable acid or base addition saltthereof, a stereochemically isomeric form thereof, or any subgroup orcombination thereof may be formulated into various pharmaceutical formsfor administration purposes. As appropriate compositions there may becited all compositions usually employed for systemically administeringdrugs.

To prepare the pharmaceutical compositions of this invention, aneffective amount of the particular compound, optionally in addition saltform, as the active ingredient is combined in intimate admixture with apharmaceutically acceptable carrier, which carrier may take a widevariety of forms depending on the form of preparation desired foradministration. These pharmaceutical compositions are desirable inunitary dosage form suitable, in particular, for administration orally,rectally, percutaneously, by parenteral injection or by inhalation. Forexample, in preparing the compositions in oral dosage form, any of theusual pharmaceutical media may be employed such as, for example, water,glycols, oils, alcohols and the like in the case of oral liquidpreparations such as suspensions, syrups, elixirs, emulsions andsolutions; or solid carriers such as starches, sugars, kaolin, diluents,lubricants, binders, disintegrating agents and the like in the case ofpowders, pills, capsules and tablets. Because of their ease inadministration, tablets and capsules represent the most advantageousoral dosage unit forms in which case solid pharmaceutical carriers areobviously employed. For parenteral compositions, the carrier willusually comprise sterile water, at least in large part, though otheringredients, for example, to aid solubility, may be included. Injectablesolutions, for example, may be prepared in which the carrier comprisessaline solution, glucose solution or a mixture of saline and glucosesolution. Injectable solutions, for example, may be prepared in whichthe carrier comprises saline solution, glucose solution or a mixture ofsaline and glucose solution. Injectable solutions containing compoundsof Formula (I) may be formulated in an oil for prolonged action.Appropriate oils for this purpose are, for example, peanut oil, sesameoil, cottonseed oil, corn oil, soybean oil, synthetic glycerol esters oflong chain fatty acids and mixtures of these and other oils. Injectablesuspensions may also be prepared in which case appropriate liquidcarriers, suspending agents and the like may be employed. Also includedare solid form preparations that are intended to be converted, shortlybefore use, to liquid form preparations. In the compositions suitablefor percutaneous administration, the carrier optionally comprises apenetration enhancing agent and/or a suitable wetting agent, optionallycombined with suitable additives of any nature in minor proportions,which additives do not introduce a significant deleterious effect on theskin. Said additives may facilitate the administration to the skinand/or may be helpful for preparing the desired compositions. Thesecompositions may be administered in various ways, e.g., as a transdermalpatch, as a spot-on, as an ointment. Acid or base addition salts ofcompounds of Formula (I) due to their increased water solubility overthe corresponding base or acid form, are more suitable in thepreparation of aqueous compositions.

It is especially advantageous to formulate the aforementionedpharmaceutical compositions in unit dosage form for ease ofadministration and uniformity of dosage. Unit dosage form as used hereinrefers to physically discrete units suitable as unitary dosages, eachunit containing a predetermined quantity of active ingredient calculatedto produce the desired therapeutic effect in association with therequired pharmaceutical carrier. Examples of such unit dosage forms aretablets (including scored or coated tablets), capsules, pills, powderpackets, wafers, suppositories, injectable solutions or suspensions andthe like, and segregated multiples thereof.

Since the compounds according to the invention are potent orallyadministrable compounds, pharmaceutical compositions comprising saidcompounds for administration orally are especially advantageous.

In order to enhance the solubility and/or the stability of the compoundsof Formula (I) in pharmaceutical compositions, it can be advantageous toemploy α-, β- or γ-cyclodextrins or their derivatives, in particularhydroxyalkyl substituted cyclodextrins, e.g.2-hydroxypropyl-β-cyclodextrin or sulfobutyl-β-cyclodextrin. Alsoco-solvents such as alcohols may improve the solubility and/or thestability of the compounds according to the invention in pharmaceuticalcompositions.

Depending on the mode of administration, the pharmaceutical compositionwill preferably comprise from 0.05 to 99% by weight, more preferablyfrom 0.1 to 70% by weight, even more preferably from 0.1 to 50% byweight of the compound of formula (I), and, from 1 to 99.95% by weight,more preferably from 30 to 99.9% by weight, even more preferably from 50to 99.9% by weight of a pharmaceutically acceptable carrier, allpercentages being based on the total weight of the composition.

The following examples illustrate the present invention.

EXAMPLES

Hereinafter, the term “DCM” means dichloromethane; “MeOH” meansmethanol; “LCMS” means Liquid Chromatography/Mass spectrometry; “aq.”means aqueous; “sat.” means saturated; “sol.” means solution; “HPLC”means high-performance liquid chromatography; “r.t.” means roomtemperature; “AcOH” means acetic acid; “m.p.” means melting point;“Et₂O” means diethyl ether; “BDS” means base deactivated silica; “RP”means reversed phase; “min” means minute(s); “h” means hour(s); “I.D.”means internal diameter; “Pd(OAc)₂” means palladium(II) acetate;“LiHMDS” means lithium hexamethyldisilazane; “HBTU” means1-[bis(dimethylamino)methylene]-1H-benzotriazol-1-ium 3-oxidehexafluorophosphate; “Xantphos” means(9,9-dimethyl-9H-xanthene-4,5-diyl)bis[diphenylphosphine]; “X-Phos”meansdicyclohexyl[2′,4′,6′-tris(1-methylethyl)[1,1′-biphenyl]-2-yl]-phosphine;“NH₄OAc” means ammonium acetate; “NMP” means 1-methyl-2-pyrrolidinone;“SFC” means Supercritical Fluid Chromatography; “iPrNH₂” meansisopropylamine; “DME” means 1,2-dimethoxyethane; “EtOAc” means ethylacetate; “BINAP” means[1,1′-binaphthalene]-2,2′-diylbis[diphenylphosphine] (racemic); “Et₃N”means triethylamine; “EtOH” means ethanol; “Pd(PPh₃)₄ meanstetrakis(triphenylphosphine)palladium; “PPh₃” means triphenylphosphine;“eq” means equivalent; “r.m.” means reaction mixture(s); “DIPE” meansdiisopropyl ether; “DIPEA” means diisopropylethylamine; “DMA” meansN,N-dimethylacetamide; “THF” means tetrahydrofuran, “DMSO” meansdimethyl sulfoxide; “DMF” means N,N-dimethyl formamide; “DMF-DMA” meansdimethylformamide dimethyl acetal; “PdCl₂(PPh₃)₂ meansdichlorobis(triphenylphosphine)palladium; “KOtBu” means potassiumtert-butoxide; “Ph(Ph₃)₄” means tetrakis(triphenylphosphine)palladiumand “Pd₂(dba)₃” meanstris[μ-[(1,2-η:4,5-η)-(1E,4E)-1,5-diphenyl-1,4-pentadien-3-one]]dipalladium.

A. Preparation of the Intermediates Example A1 a) Preparation ofIntermediate 1

K₂CO₃ (9.6 g, 69.5 mmol) and 1-methyl-1-tosylmethylisocyanide (8 g, 38.2mmol) were added to a sol. of 2-formyl-5-nitroanisole (6.29 g, 34.7mmol) in MeOH (150 ml) and the r.m. was refluxed for 4 h. The r.m. wasconcentrated under reduced pressure, the residue was dissolved in DCMand the organic phase was washed with H₂O, dried (MgSO₄), filtered andthe solvent was evaporated in vacuo. The residue was purified by flashchromatography over Silica gel (eluent: n-heptane/EtOAc from 100/0 to50/50). The product fractions were collected and the solvent wasevaporated. Yield: 6.24 g of intermediate 1 (77%).

b) Preparation of Intermediate 2

MeOH (150 ml) was added to Pd/C 10% (1 g) under a N₂ atmosphere.Subsequently, a 0.4% thiophene sol. in DIPE (1 ml) and intermediate 1(6.24 g, 26.6 mmol) were added. The r.m. was stirred at 25° C. under aH₂ atmosphere until 3 eq of H₂ was absorbed. The catalyst was filteredoff over diatomaceous earth and the filtrate was evaporated. Yield: 5.4g of intermediate 2 (99%).

Example A2 a) Preparation of Intermediate 3

Iodobenzene diacetate (5.49 g, 18.44 mmol) and trifluoromethanesulfonicacid (6.08 ml, 69.17 mmol) were stirred in CH₃CN (100 ml) at r.t. for 1h under N₂. 2′-Methoxy-4′-nitro-acetophenone (3.0 g, 15.37 mmol) wasadded at once at r.t. to the sol. and the r.m. was then refluxed for 2h, then cooled to r.t. and carefully added to a stirred sat. aq. sol. ofNa₂CO₃ (500 ml). The product was extracted with DCM and the organicphase was dried (MgSO₄), filtered and the solvent was evaporated underreduced pressure. The resulting dark brown oil was purified by flashcolumn chromatography over Silica gel (eluent: DCM/MeOH isocratic 95/5).The product fractions were collected and the solvent was evaporatedunder reduced pressure. Yield: 3.0 g of intermediate 3 (75%).

b) Preparation of Intermediate 4

MeOH (50 ml) was added to Pd/C 10% (0.250 g) under a N₂ atmosphere.Subsequently, a 0.4% thiophene sol. in DIPE (2 ml) and intermediate 3(0.946 g, 4.04 mmol) were added. The r.m. was stirred at 25° C. under aH₂ atmosphere until 3 eq of H₂ was absorbed. The catalyst was filteredoff over diatomaceous earth and the filtrate was evaporated. The productwas triturated in DIPE, filtered off and dried under vacuum. Yield: 0.66g of intermediate 4 (80%).

Example A3 Preparation of Intermediate 5

3-Bromo-2-pyridinamine (24.9 g, 144 mmol),2-bromo-1-(3-methoxyphenyl)-1-propanone (42 g, 172.8 mmol) and 250 mln-butanol were heated at reflux temperature for 3 nights. The mixturewas separated between DCM and water. The organic layer was dried(MgSO₄), filtered and the solvent was evaporated in vacuo. The residuewas purified by column chromatography over Silica gel (eluent:DCM/MeOH(NH₃) from 100/0 to 98/2. The purest fractions were concentratedunder reduced pressure and the residue was crystallized from DIPE.Yield: 19 g of intermediate 5 (42%).

Example A4 Preparation of Intermediate 6

To a sol. of intermediate 5 (2 g, 6.3 mmol) and 4-bromo-3-methoxyaniline(1.40 g, 6.93 mmol) in DMF (40 ml) were added Cs₂CO₃ (4.1 g, 12.61mmol), Pd₂(dba)₃ (0.144 g, 0.158 mmol) and BINAP (0.196 g, 0.315 mmol)and the mixture was purged with N₂ for 5 min. The r.m. was heated at120° C. for 2 h then cooled to r.t. To the r.m. H₂O (300 ml) and EtOAc(300 ml) were added and the mixture was stirred at r.t. for 15 min. Theorganic phase was separated, washed with H₂O and brine, dried (MgSO₄),filtered and evaporated till dryness. The residue was crystallized fromEtOH, filtered and dried. Yield: 1.8 g of intermediate 6 (65%).

Example A5 Preparation of Intermediate 7

Bis(pinacolato)diborane (0.191 g, 0.753 mmol),[1,1′-Bis(diphenylphosphino) ferrocene]dichloropalladium (0.020 g, 0.025mmol) and potassium acetate (0.049 g, 0.502 mmol) were added to a sol.of intermediate 6 (0.110 g, 0.251 mmol) in DMF (10 ml) and the mixturewas purged with N₂ for 10 min. The r.m. was heated at 120° C. for 5 h.The r.m. was cooled to r.t. and the solvent was removed under reducedpressure. The residue was dissolved in DCM. The organic phase was washedwith H₂O and brine, dried (MgSO₄), filtered and evaporated till dryness.The residue was purified by flash chromatography over Silica gel(eluent: DCM/MeOH from 100/0 to 90/10). The product fractions werecollected and the solvent was evaporated. Yield: 0.070 g of intermediate7 (57%).

Example A6 a) Preparation of Intermediate 8

2-Methoxy-4-nitrobenzaldehyde (4.677 g, 25.817 mmol) and2-acetamidoacrylic acid (5 g, 38.725 mmol) were added to pyridine (50ml) and the r.m. was stirred at 120° C. overnight. After cooling ther.m. was poured into H₂O and the product was extracted with EtOAc. Theorganic phase was separated, dried (MgSO₄), filtered and evaporatedunder reduced pressure. The residue was purified by flash chromatographyover Silica gel (eluent: n-heptane/EtOAc from 100/0 to 75/25). Theproduct fractions were collected and the solvent was evaporated. Yield:0.9 g of intermediate 8 (14%).

b) Preparation of Intermediate 9

MeOH (50 ml) was added to Pd/C 10% (0.2 g) under a N₂ atmosphere.Subsequently, a 0.4% thiophene sol. in DIPE (0.5 ml) and intermediate 8(0.9 g, 3.62 mmol) were added. The r.m. was stirred at 25° C. under a H₂atmosphere until 3 eq of H₂ was absorbed. The catalyst was filtered offover diatomaceous earth and the filtrate was evaporated. Yield: 5.4 g ofintermediate 9 (88%).

Example A7 a) Preparation of Intermediate 10

2′-Methoxy-4′-nitro-acetophenone (90564-14-0, 3.07 g, 15.73 mmol) inDMF-DMA was refluxed for 6 h. The r.m. was cooled to r.t. andconcentrated under reduced pressure. The residue was triturated in DIPEand the precipitate was filtered. Yield: 3.63 g of intermediate 10(92%).

b) Preparation of Intermediates 11 and 12

Intermediate 10 (3.63 g, 14.505 mmol) was added to a sol. ofmethylhydrazine (0.84 ml, 15.956 mmol) in AcOH (20 ml) and the resultingmixture was stirred at 90° C. for 3 h. The r.m. was cooled to r.t. andconcentrated under reduced pressure. The residue was purified by flashchromatography over Silica gel (eluent: DCM/n-heptane from 50/50 to70/30). The product fractions were collected and the solvent wasevaporated. Yield: 1.44 g of intermediate 11 (42%) and 0.83 g ofintermediate 12 (24%).

c) Preparation of Intermediate 13

MeOH (50 ml) was added to Pd/C 10% (0.2 g) under a N₂ atmosphere.Subsequently, a 0.4% thiophene sol. in DIPE (1 ml) and intermediate 12(0.83 g, 3.57 mmol) were added. The r.m. was stirred at 25° C. under aH₂ atmosphere until 3 eq of H₂ was absorbed. The catalyst was filteredoff over diatomaceous earth and the filtrate was evaporated. Yield: 0.72g of intermediate 13 (98%).

Example A8 a) Preparation of Intermediate 14

First K₂CO₃ (14.84 g, 107.5 mmol) and then1-methyl-1-tosylmethylisocyanide (13.5 g, 64.5 mmol) were added to asol. of 6-bromopyridine-3-carbaldehyde (10.0 g, 53.76 mmol) in 200 mlMeOH. The r.m. was refuxed for 1 h. The r.m. was concentrated underreduced pressure, the residue was dissolved in DCM and the organic phasewas washed with H₂O, dried (MgSO₄), filtered and the solvent wasevaporated in vacuo. The residue was purified by flash chromatographyover Silica gel (eluent: n-heptane/EtOAc from 100/0 to 50/50). Theproduct fractions were collected and the solvent was evaporated. Theresidue was suspended in DIPE, the precipitate was filtered off anddried under vacuum at 50° C. Yield: 6.8 g of intermediate 14 (53%).

b) Preparation of Intermediate 15

2-Methyl-2-propanol, sodium salt (0.804 g, 8.36 mmol), BINAP (0.521 g,0.837 mmol), Pd₂(dba)₃ (0.383 g, 0.418 mmol) and benzophenone imine(0.948 g, 5.23 mmol) were added to a sol. of intermediate 14 (1.0 g,4.18 mmol) in toluene (20 ml). The r.m. was degassed and put under a N₂atmosphere. The r.m. was stirred at 100° C. for 2 h in the microwave.After cooling most of the solvent was evaporated (almost dry) and a 1 NHCl:THF sol. (1/1, 100 ml) was added. The r.m. was stirred at r.t. for 1h. The r.m. was treated with a 10% Na₂CO3 sol. and the product wasextracted with EtOAc. The organic phase was dried (MgSO₄), filtered andthe solvent was evaporated. The residue was purified by columnchromatography over Silica gel (eluent: DCM/MeOH from 100/0 to 95/5).The product fractions were collected and the solvent was evaporated.Yield: 0.29 g of intermediate 15 (39%).

Example A9 Preparation of Intermediate 16

A mixture of 3-bromo-2-pyridinamine (50 g, 289 mmol) and2-bromo-1-(4-fluorophenyl)ethanone (75.3 g, 346.8 mmol) in EtOH (300 ml)was heated at 75° C. for 17 h. The r.m. was cooled to r.t. The formedprecipitate was filtered off, washed with EtOH (50 ml) and dried invacuo, yielding fraction 1. The corresponding filtrate was concentratedto a volume of 100 ml. EtOH (20 ml) and DIPE (100 ml) were added to theconcentrate resulting in precipitation of the product. The solids werefiltered off, washed with a mixture of DIPE (50 ml) and EtOH (10 ml),and dried in vacuo, yielding fraction 2. Fractions 1 and 2 were combinedand stirred for 30 min in a sat. aq. NaHCO₃ sol. (500 ml). This mixturewas extracted with DCM (500 ml). The separated organic layer was dried(Na₂SO₄), filtered and the solvent was evaporated in vacuo. The residuewas recrystallized from EtOAc. The solid was filtered off and dried invacuo. Yield: 46.5 g of intermediate 16 (55%).

Example A10 a) Preparation of Intermediate 17

An 8 M methylamine sol. in ethanol (100 ml, 0.8 mol) was added to1-bromo-3-fluoro-2-nitro-benzene (19.8 g, 90 mmol). The mixture wascooled on a water bath and was stirred overnight at r.t. Then, thesolvent was evaporated and the residue was partitioned between water andDCM. The combined organic layers were dried (MgSO₄), filtered andconcentrated in vacuo. Yield: 20 g of intermediate 17 (96%), which wasused as such in the next step.

b) Preparation of Intermediate 18

Intermediate 17 (20 g, 86.6 mmol) and iron powder (15 g, 269 mmol) wereadded to acetic acid (150 ml), and the resulting suspension was stirredand heated at 60° C. for 1 h. The r.m. was concentrated in vacuo and theresidue was partitioned between DCM and a sat. aq. NaHCO₃ sol. Theorganic layer was dried (MgSO₄), filtered and concentrated in vacuo.Yield: 14 g of intermediate 18 (80%), which was used as such in the nextstep.

c) Preparation of Intermediate 19

Et₃N (8.1 g, 80 mmol) was added to a sol. of intermediate 18 (10 g, 39.8mmol) in DCM (250 ml). Subsequently, 4-fluoro-benzoylchloride (5.5 g,34.7 mmol) was added dropwise at r.t., and the r.m. was stirred at r.t.overnight. The r.m. was washed with water, and the organic layers wasdried (MgSO₄), filtered and concentrated in vacuo. The residue wasdissolved in AcOH (100 ml), and a concentrated aq. HCl sol. (3 ml) wasadded. The r.m. was stirred at 100° C. for 2 h. The r.m. wasconcentrated in vacuo and the residue was dissolved in DCM and washedwith a sat. aq. NaHCO₃ sol. and water. The organic layer was dried(MgSO₄), filtered and concentrated in vacuo. Yield: 12 g of intermediate19, which was used as such in the next step.

Example A11 Preparation of Intermediate 20

4,4,4-Trifluorobutyraldehyde (1.891 g, 15 mmol) was dropwise added atr.t. to a sol. of intermediate 18 (3.015 g, 15 mmol) and sodiummetabisulfite (3.707 g, 19.5 mmol) in DMA (80 ml). The reaction waspreformed in the microwave at 220° C. for 45 min. The r.m. was dilutedin EtOAc and the organic layer was washed with H₂O, dried (MgSO₄),filtered and the solvent was evaporated. The residue was purified by RPpreparative HPLC [RP Shandon Hyperprep® C18 BDS (8 μm, 250 g, I.D. 5cm); mobile phase: a gradient of (0.25% NH₄HCO₃ sol. in water)/MeOH].The product fractions were collected and worked up. Yield: 0.670 g ofintermediate 20 (14.5%).

Example A12 Preparation of Intermediate 21

A mixture of 3-bromo-2-pyridinamine (1 g, 5.78 mmol) and2-bromo-1-phenyl-1-propanone (1.48 g, 6.94 mmol) in EtOH (20 ml) wasstirred and heated at 100° C. for 2 days. The solvent was evaporated invacuo and the residue was purified by flash chromatography (eluent:DCM/MeOH (NH₃) from 100/0 to 98/2). The product fractions were collectedand the solvent was evaporated. The residue was purified by RPpreparative HPLC [RP Shandon Hyperprep® C18 BDS (8 μm, 250 g, I.D. 5cm); mobile phase: a gradient of (0.25% NH₄HCO₃ sol. in water)/MeOH].The product fractions were collected and worked up. Yield: 0.850 g ofintermediate 21 (51%).

Example A13 a) Preparation of Intermediate 22

MeOH (100 ml) was added to Pt/C 5% (1 g) under N₂ atmosphere.Subsequently, a 0.4% thiophene sol. in DIPE (2 ml) and4-amino-2-bromo-3-nitro-pyridine (3.5 g, 16 mmol) were added. The r.m.was stirred at 25° C. under H₂ atmosphere until 3 eq of H₂ was absorbed.The catalyst was filtered off over diatomaceous earth and the filtratewas concentrated in vacuo. Yield: 1.8 g of intermediate 22 (63%), whichwas used as such in the next step.

b) Preparation of Intermediate 23

A mixture of intermediate 22 (1.8 g, 9.57 mmol) and 4-fluoro-benzoicacid (1.34 g, 9.57 mmol) in polyphosphoric acid (25 g) was stirred andheated at 180° C. for 1 h. The r.m. was cooled to r.t, and water wasadded. The resulting sol. was neutralized with K₂CO₃, and the resultingprecipitate was filtered off and washed with water. Yield: 1 g of crudeintermediate 23, which was used as such in the next step.

c) Preparation of Intermediate 24

Intermediate 23 (825 mg, 2.8 mmol), CH₃I (400 mg, 2.8 mmol), and K₂CO₃(830 mg, 6 mmol) were added to DMF (25 ml). The resulting mixture wasstirred at 50° C. for 1 h. The r.m. was cooled to r.t., and concentratedin vacuo. The residue was partitioned between DCM and water. The organiclayer was dried (MgSO₄), filtered and concentrated in vacuo. The residuewas purified by RP preparative HPLC [RP Shandon Hyperprep® C18 BDS (8μm, 250 g, I.D. 5 cm); mobile phase: a gradient of (0.25% NH₄HCO₃ sol.in water)/MeOH]. The product fractions were collected and worked up.Yield: 180 mg of intermediate 24 (21%).

Example A14 a) Preparation of Intermediate 25

1-Methyl-4-pyrazoyl boronic acid (0.63 g, 4.99 mmol) and Cs₂CO₃ (3.257g, 9.99 mmol) were added to a sol. of 2-bromo-5-nitroanisole (1.16 g,4.99 mmol), palladium(II)acetate (0.112 g, 0.5 mmol) andtriphenylphosphine (0.262 g, 1 mmol) in THF (20 ml). After stirring for10 min, a 3 N NaOH sol. (1.6 ml) was added and the mixture was purgedwith N₂ for 2 min. The r.m. was stirred at r.t. overnight and theproduct was extracted with EtOAc. The organic layer was washed with H₂Odried (MgSO₄), filtered and evaporated off. The residue was purified byflash chromatography over Silica gel (eluent: DCM/MeOH from 100/0 to96/4). The product fractions were collected and the solvent wasevaporated. Yield: 0.630 g of intermediate 25 (54%).

b) Preparation of Intermediate 26

MeOH (100 ml) was added to Pd/C 10% (0.2 g) under a N₂ atmosphere.Subsequently, a 0.4% thiophene sol. in DIPE (0.5 ml) and intermediate 25(0.926 g, 3.97 mmol) were added. The r.m. was stirred at 50° C. under aH₂ atmosphere until 3 eq of H₂ was absorbed. The catalyst was filteredoff over diatomaceous earth and the filtrate was evaporated. The residuewas diluted in DCM and the organic layer was washed with H₂O, dried(MgSO₄), filtered and concentrated under reduced pressure. The residuewas purified by flash chromatography over Silica gel (eluent: DCM/MeOHfrom 100/0 to 90/10). The product fractions were collected and thesolvent was evaporated. Yield: 0.82 g of intermediate 26 (100%).

Example A15 a) Preparation of Intermediate 27

First K₂CO₃ (36 g, 262 mmol) and then 1-methyl-1-tosylmethylisocyanide(35 g, 167 mmol) were added to a sol. of5-nitropyridine-2-carboxaldehyde (131 mmol) in MeOH (500 ml) and ther.m. was refluxed for 4 h. The r.m. was concentrated under reducedpressure, the residue was dissolved in DCM and the organic phase waswashed with H₂O, dried (Na₂SO₄), filtered and the solvent was evaporatedin vacuo. The residue was purified by flash chromatography over Silicagel (eluent: petroleum ether/EtOAc 4/1). The product fractions werecollected and the solvent was evaporated. Yield: 15 g of intermediate 27(56%).

b) Preparation of Intermediate 28

A sol. of intermediate 27 (10 g, 48.7 mmol) in THF (300 ml) was added toa sol. of ammonium chloride (2.6 g, 48.7 mmol) in H₂O (100 ml). Iron(16.3 g, 292 mmol) was then added and the r.m. was refluxed for 4 h. Theprecipitate was removed by filtration and the filtrate evaporated invacuo. The residue was dissolved in EtOAc and the organic layer waswashed with H₂O, dried (Na₂SO₄), filtered and the solvent was evaporatedin vacuo. The residue was dissolved in a 2 N HCl sol. and the aq. phasewas washed with DCM, made basic by addition of a 2 N NaOH sol. and theproduct was extracted by EtOAc. The organic layer was washed, dried(Na₂SO₄), filtered and the solvent was evaporated in vacuo to yield 6 gof intermediate 28 (71%).

Example A16 a) Preparation of Intermediate 29

A mixture of 5-bromo-2-nitropyridine (5 g, 24.63 mmol),tributyl(1-ethoxyvinyl)tin (9.785 g, 27.1 mmol) and Ph(PPh₃)₄ (0.284 g,0.246 mmol) in DMF (100 ml) were stirred at 120° C. for 3 h. Aftercooling, a 1 N HCl sol. was added and the r.m. was stirred at r.t. for18 h. The r.m. was neutralized with a sat. aq. NaHCO₃ sol. and theproduct was extracted with DCM. The organic phase was dried (Na₂SO₄),filtered and the solvent was evaporated in vacuo. The residue waspurified by flash chromatography over Silica gel (eluent: DCM/MeOH from100/0 to 98/2). The product fractions were collected and the solvent wasevaporated. Yield: 3.44 g of intermediate 29 (83%).

b) Preparation of Intermediate 30

Iodobenzene diacetate (2.327 g, 7.2 mmol) and trifluoromethanesulfonicacid (2.397 ml, 27.1 mmol) were stirred in CH₃CN (50 ml) at r.t. for 20min under N₂. Intermediate 29 (1 g, 6.0 mmol) in CH₃CN (10 ml) was addedat once at r.t. to the sol. and the r.m. was then refluxed for 2 h.After cooling the excess of CH₃CN was removed under reduced pressure andthe crude product was extracted with DCM. The organic layer was washedwith a sat. aq. sol. of Na₂CO₃, dried (MgSO₄), filtered and the solventwas evaporated under reduced pressure. The residue was purified by flashchromatography over Silica gel (eluent: DCM/MeOH from 100/0 to 99/1).The product fractions were collected and the solvent was evaporatedunder reduced pressure. Yield: 0.73 g of intermediate 30 (47%).

c) Preparation of Intermediate 31

MeOH (150 ml) was added to Pd/C 10% (0.5 g) under a N₂ atmosphere.Subsequently, a 0.4% thiophene sol. in DIPE (2 ml) and intermediate 30(2.2 g, 10.7 mmol) were added. The r.m. was stirred at 50° C. under a H₂atmosphere until 3 eq of H₂ was absorbed. The catalyst was filtered offover diatomaceous earth and the filtrate was evaporated. Yield: 1.6 g ofintermediate 31 (68%).

Example A17 a) Preparation of Intermediate 32

Isopropylamine (12.9 g, 218 mmol) was added to a sol. of1-bromo-3-fluoro-2-nitro-benzene (8.0 g, 36 mmol) in EtOH (40 mL). Ther.m. was stirred at r.t. overnight. Then, the solvent was evaporated andthe residue was partitioned between water and DCM. The combined organiclayers were dried (MgSO₄), filtered and concentrated in vacuo. Yield:8.3 g of intermediate 32 (88%), which was used as such in the next step.

b) Preparation of Intermediate 33

Intermediate 32 (8.3 g, 32 mmol) and iron powder (8.95 g, 160 mmol) wereadded to acetic acid (50 ml), and the resulting suspension was stirredand heated at 60° C. for 1 h. The r.m. was concentrated in vacuo and theresidue was partitioned between DCM and a sat. aq. NaHCO₃ sol. Theorganic layer was dried (MgSO₄), filtered and concentrated in vacuo.Yield: 7.5 g of intermediate 33 (100%), which was used as such in thenext step.

c) Preparation of Intermediate 34

4-Fluoro-benzaldehyde (2.28 g, 18.3 mmol) and Na₂S₂O₅ (3.73 g, 19.6mmol) were added to a sol. of intermediate 33 (3 g, 13.1 mmol) in DMA(50 ml). The r.m. was stirred at r.t. overnight. Then, the r.m. waspoured into water, resulting in the precipitation of a solid. The solidwas filtered off, washed with water, and suspended in DIPE. Theresulting solid was filtered off, washed with DIPE, and dried. Yield:2.3 g of intermediate 34 (53%).

Example A18 a) Preparation of Intermediate 35

2-Iodo-5-nitroanisole (0.675 g, 2.42 mmol), Ag₂CO₃ (1.11 g, 4.0 mmol),[1,1′-Bis(diphenylphosphino)ferrocene]dichloropalladium(II) (0.073 g,0.101 mmol) and PPh₃ (0.053 g, 0.20 mmol) were thoroughly mixed.2-Methythiazole (0.2 g, 2.02 mmol) was added followed by CH₃CN (10 ml)and the mixture was purged with N₂ for 2 min. The r.m. was stirred at60° C. overnight. After cooling DCM (20 ml) and acetone (10 ml) wereadded and the suspension was filtered over diatomaceous earth andextensively washed with DCM. The filtrate was concentrated under reducedpressure and the residue was purified by flash chromatography overSilica gel (eluent: DCM). The product fractions were collected and thesolvent was evaporated under reduced pressure. Yield: 0.257 g ofintermediate 35 (51%).

b) Preparation of Intermediate 36

Intermediate 35 (0.25 g, 1 mmol) and iron (0.278 g, 5 mmol) were shakenin AcOH (6 ml) for 1.5 h. The solvent was evaporated. The residue wastaken up in DCM and the organic layer was washed with a 1 N NaOH sol.,dried (MgSO₄), filtered and concentrated under reduced pressure. Yield:0.220 g of intermediate 36 (100%).

Example A19 a) Preparation of Intermediate 37

A suspension of 2-methoxy-4-nitro-benzoic acid (4.0 g, 20.3 mmol), SOCl₂(4.72 ml, 64.9 mmol), CHCl₃ (20 ml) and a drop of DMF was refluxed for 6h. After cooling, the solvents were removed under reduced pressure andthe crude residual oil was used in the next step without purification.Yield: 4.4 g of intermediate 37 (100%).

b) Preparation of Intermediate 38

A sol. of intermediate 37 (4.374 g, 20.3 mmol) and acetamide oxime(1.653 g, 22.32 mmol) in pyridine (50 ml) was refluxed overnight. Aftercooling the solvent was evaporated and the residue was dissolved in DCM.The organic layer was washed with H₂O, dried (MgSO₄), filtered and thesolvent was evaporated under reduced pressure. The residue was purifiedby flash chromatography over Silica gel (eluent: DCM). The productfractions were collected and the solvent was evaporated under reducedpressure. Yield: 3.8 g of intermediate 38 (79%).

c) Preparation of Intermediate 39

Intermediate 38 (0.2 g, 0.85 mmol) and tin(II) chloride dihydrate (0.959g, 4.25 mmol) in EtOH (5 ml) were stirred at 60° C. for 1.5 h. Aftercooling the r.m. was poured into a mixture of a sat. Na₂CO₃ sol. (15 ml)and DCM (8 ml). The 2 phases were separated and the aq. phase wasextracted with DCM. The combined organic layers were dried (MgSO4),filtered and concentrated under reduced pressure. Yield: 0.153 g ofintermediate 39 (87%).

Example A20 a) Preparation of Intermediate 40

A 2 M sol. of methylamine in THF (0.80 g, 25.9 mmol) was added at 0° C.to a mixture of 2,4-dichloro-3-nitropyridine (5.0 g, 25.9 mmol) and Et₃N(4 ml, 28.9 mmol) in DMF (15 ml). The r.m. was stirred at r.t. for 1 h,then poured into ice water and the resulting solid was filtered, washedwith H₂O and dried under vacuum. Yield: 3.0 g of intermediate 40 (62%).

b) Preparation of Intermediate 41

4-Fluorobenzaldehyde (1.74 g, 14.08 mmol) and Na₂S₂O₄ (8.3 g, 47.7 mmol)were added to a sol. of intermediate 40 (2.5 g, 13.32 mmol) in EtOH (60ml). The r.m. was heated under microwave conditions at 150° C. for 45min. The r.m. was cooled to r.t. and filtered through diatomaceousearth. The filtrate was evaporated and the residue was purified by flashcolumn chromatography over Silica gel (eluent: DCM/MeOH(NH₃) 99/1). Theproduct fractions were collected and the solvent was evaporated. Yield:0.44 g of intermediate 41 (13%).

Example A21 a) Preparation of Intermediate 42

Trifluoromethanesulfonic acid (2.39 ml, 27.0 mmol) was added to a sol.of iodobenzene diacetate (2.32 g, 7.21 mmol) in CH₃CN (60 ml) and ther.m. was stirred at r.t. for 20 min under N₂. A sol. of2′-fluoro-4′-nitro-acetophenone (1.1 g, 6.0 mmol) in CH₃CN (10 ml) wasadded at once at r.t. to the sol. and the r.m. was then refluxed for 2 hand subsequently cooled to r.t. CH₃CN was evaporated and the residue wasextracted with DCM. The organic phase was washed with a sat. aq. NaHCO₃sol., dried (MgSO₄), filtered and the solvent was evaporated underreduced pressure. The residue was purified by flash columnchromatography over Silica gel (eluent: DCM). The product fractions werecollected and the solvent was evaporated under reduced pressure. Yield:0.75 g of intermediate 42 (53%).

b) Preparation of Intermediate 43

MeOH (50 ml) was added to Pd/C 10% (0.2 g) under a N₂ atmosphere.Subsequently, a 0.4% thiophene sol. in DIPE (1 ml) and intermediate 42(0.7 g, 3.15 mmol) were added. The r.m. was stirred at 25° C. under a H₂atmosphere until 3 eq of H₂ was absorbed. The catalyst was filtered offover diatomaceous earth and the filtrate was evaporated. Yield: 0.6 g ofintermediate 43 (77%).

Example A22 a) Preparation of Intermediate 44

A sol. of 2-iodo-5-bromopyridine (13.7 g, 48.2 mmol), 2-methyl-4-oxazolecarboxylic acid methyl ester (3.4 g, 24.1 mmol), palladium(II)acetate(0.54 g, 2.41 mmol), tri-o-toluylphosphine (1.47 g, 4.81 mmol) andCs₂CO₃ (15.7 g, 48.2 mmol) in toluene (75 ml) was flushed with N₂,sealed and stirred at 110° C. overnight. The catalyst was filtered overdiatomaceous earth and the filtrate was evaporated. The crude productwas purified by flash column chromatography over Silica gel (eluent:DCM/MeOH(NH₃) from 100/0 to 98/2). The product fractions were collectedand the solvent was evaporated. Yield: 5.64 g of intermediate 44 (13%).

b) Preparation of Intermediate 45

Intermediate 44 (5.64 g, 15.4 mmol) and LiOH (0.91 g, 38 mmol) weredissolved in a mixture of dioxane (40 ml) and H₂O (10 ml). The r.m. wasstirred at r.t. for 5 h, then treated with a 1 M HCl sol. until pH=2.The obtained precipitate was filtered and dried under vacuum. Thefiltrate was extracted with CHCl₃ and the organic layer was dried(MgSO₄), filtered and the solvent was removed under reduced pressure toafford a solid. The two solid fractions were combined. Yield: 4.75 g ofintermediate 45 (97%).

c) Preparation of Intermediate 46

Copper(II) oxide (1.33 g, 16.8 mmol) was added to a sol. of intermediate45 (4.75 g, 16.8 mmol) in DMF (75 ml). The r.m. was heated at 150° C.for 15 h. After cooling, the catalyst was filtered over diatomaceousearth and the filtrate was evaporated. The residue was triturated inDIPE/CH₃CN and the resulting solid was filtered off. The filtrate wasevaporated and the residue was used as such in the next step. Yield: 1 gof intermediate 46 (14.5%).

d) Preparation of Intermediate 47

Intermediate 46 (0.53 g, 2.23 mmol), Pd₂(dba)₃ (0.204 g, 0.223 mmol),dicyclohexyl[2′,4′,6′-tris(1-methylethyl)[1,1′-biphenyl]-2-yl]phosphine(0.212 g, 0.446 mmol) and Cs₂CO₃ (2.18 g, 6.69 mmol) were added to asol. N-benzylamine (0.239 g, 2.23 mmol) in 2-methyl-2-propanol (20 ml),and the r.m. was heated at 110° C. overnight. After cooling, H₂O wasadded and the product was extracted with DCM. The organic phase wasdried (MgSO4) filtered and concentrated under reduced pressure. Theresidue was purified by flash chromatography over Silica gel (eluent:DCM/MeOH(NH₃) from 100/0 to 98/2) and the product fractions werecollected and the solvent was evaporated. Yield: 0.15 g of intermediate47 (21%).

e) Preparation of Intermediate 48

MeOH (50 ml) was added to Pd/C 10% (0.05 g) under a N₂ atmosphere.Subsequently, intermediate 47 (0.15 g, 0.565 mmol) was added. The r.m.was stirred at 50° C. under a H₂ atmosphere until 1 eq of H₂ wasabsorbed. The catalyst was filtered off over diatomaceous earth and thefiltrate was evaporated. Yield: 0.105 g of intermediate 48 (95%).

Example A23 a) Preparation of Intermediate 49

A 1 M sol. of LiHMDS in THF (47 ml, 47 mmol) was added dropwise at 0° C.under a N₂ atmosphere to a sol. of 5-(4-nitrophenyl)-oxazole (6.0 g,31.6 mmol) in THF (100 ml). The r.m. was stirred at 0° C. for 30 min,and then DMF (3.67 ml, 47 mmol) was added and the mixture was allowed towarm to r.t. The r.m. was stirred at r.t. for 1 h and then MeOH (100 ml)and NaBH₄ (1.55 g, 41 mmol) were added. The r.m. was stirred at r.t. for16 h, and then the solvents were partially removed in vacuo. H₂O wasadded, and the mixture was neutralized by adding AcOH. The mixture wasextracted with DCM. The organic phase was separated, dried (MgSO₄),filtered and the solvent was evaporated in vacuo. The residue wastriturated with DIPE. Yield: 4.6 g of intermediate 49 (61%).

b) Preparation of Intermediate 50

A suspension of 60% NaH in mineral oil (600 mg, 15 mmol) was added undera N₂ atmosphere to a sol. of intermediate 49 (1.79 g, 7.5 mmol) in THF(61 ml). The r.m. was stirred at r.t. for 30 min, and then CH₃I (1.87ml, 30 mmol) was added. The r.m. was stirred at 60° C. for 4 h, and thenbrine was added. The organic phase was separated, dried (MgSO₄),filtered and the solvent was evaporated in vacuo. The residue waspurified by flash column chromatography over silica gel (eluent:DCM/MeOH(NH₃) 100/0 to 98/2). The product fractions were collected andthe solvent was evaporated. Yield: 790 mg of intermediate 50 (41%).

c) Preparation of Intermediate 51

MeOH (100 ml) was added to Pd/C 10% (0.2 g) under a N₂ atmosphere.Subsequently, a 0.4% thiophene sol. in DIPE (0.5 ml) and intermediate 50(0.79 g, 3.1 mmol) were added. The r.m. was stirred at 25° C. under a H₂atmosphere until 3 eq of H₂ was absorbed. The catalyst was filtered offover diatomaceous earth and the filtrate was evaporated. Yield: 0.65 gof intermediate 51 (quantitative).

Example A24 a) Preparation of Intermediate 52

A mixture of N-(5-bromo-1,6-dihydro-6-oxo-2-pyridinyl)-acetamide (8.6 g,37.2 mmol), CH₃I (13.2 g, 93 mmol), and Ag₂CO₃ (10.2 g, 3.2 mmol) intoluene (275 ml) was stirred at 60° C. for 48 h. The r.m. was cooled tor.t., and the solvent was removed in vacuo. The residue was partitionedbetween DCM and H₂O. The organic phase was separated, dried (MgSO₄),filtered and the solvent was evaporated in vacuo. The residue wastriturated with DIPE. Yield: 5.7 g of intermediate 52 (62%).

b) Preparation of Intermediate 53

1-Methyl-4-pyrazoyl boronic acid pinacol ester (1.96 g, 9.4 mmol) andPd(PPh₃)₄ (0.835 g, 0.72 mmol) were added to a solution of intermediate52 (1.77 g, 7.2 mmol) in DMF (15 ml), H₂O (5 ml) and K₂CO₃ (2.0 g, 14.4mmol). The r.m. was degassed, put under N₂, stirred and heated for 30min at 140° C. under microwave irradiation. The r.m. was cooled to r.t.and partitioned between H₂O and DCM. The organic phase was separated,dried (MgSO₄), filtered and the solvent was evaporated in vacuo. Theresidue was triturated with CH₃CN. Yield: 1.35 g of intermediate 53(76%).

c) Preparation of Intermediate 54

An aq. 10% NaOH sol. (50 ml) was added to a solution of intermediate 53(1.3 g, 5.28 mmol) in MeOH (100 ml), and the r.m. was stirred at 80° C.for 18 h. The organic solvent was removed in vacuo and DCM and H₂O wereadded. The organic phase was separated, dried (MgSO₄), filtered and thesolvent was evaporated in vacuo. The residue was triturated with DIPE.Yield: 0.95 g of intermediate 54 (88%).

Example A25 a) Preparation of Intermediate 55

2-Methylpyridine-4-boronic acid pinacol ester (3178 mg, 14.5 mmol) andPd(PPh₃)₄ (1.22 g, 1.06 mmol) were added to a solution of2-bromo-5-nitroanisole (3.06 g, 13.2 mmol) in DME (40 ml), water (16 ml)and Cs₂CO₃ (1.33 g, 40.9 mmol). The resulting mixture was stirred andheated at reflux temperature for 16 h. The r.m. was cooled to r.t. andpartitioned between H₂O and DCM. The organic phase was separated, dried(MgSO₄), filtered and the solvent was evaporated in vacuo. The residuewas purified by flash column chromatography over silica gel (eluent:DCM/MeOH from 100/0 to 98/2). The product fractions were collected andconcentrated in vacuo, yielding 2.04 g of intermediate 55 (63%).

b) Preparation of Intermediate 56

Intermediate 55 (2.04 g, 9.50 mmol) was added to a stirring mixture of10% Pd/C (500 mg) and a 4% thiophene solution in MeOH (1 ml). The r.m.was heated at 50° C. under a H₂ atmosphere. After 3 eq. of H₂ wereabsorbed, the catalyst was removed by filtration over diatomaceousearth. The filtrate was evaporated under reduced pressure and the crudeproduct was purified by column chromatography on silica gel (eluent:MeOH/DCM 10/90). The product fractions were combined and evaporated toyield a light-brown solid. Yield: 1700 mg of intermediate 56 (95%).

Example A26 Preparation of Intermediate 57

Trifluoromethanesulfonic acid (7.63 ml, 86 mmol) was added to a sol. ofiodobenzene diacetate (7.41 g, 23 mmol) in CH₃CN (50 ml) and the r.m.was stirred at r.t. for 20 min under N₂. A sol. of1-(2-chloro-5-pyrimidinyl)-ethanone (3 g, 19.2 mmol) in CH₃CN (10 ml)was added at once at r.t. to the sol. and the r.m. was then refluxed for2 h and subsequently cooled to r.t. CH₃CN was evaporated and the residuewas extracted with DCM. The organic phase was washed with a sat. aq.NaHCO₃ sol., dried (MgSO₄), filtered and the solvent was evaporatedunder reduced pressure. The residue was purified by flash columnchromatography over Silica gel (eluent: DCM). The product fractions werecollected and the solvent was evaporated under reduced pressure. Yield:1.6 g of intermediate 57 (43%).

Example A27 a) Preparation of Intermediate 58

A mixture of 1-ethynyl-2-methoxy-4-nitro-benzene (785 mg, 4.43 mmol) andtrimethylsilyl azide (1.75 ml, 13.3 mmol) was divided over 6 microwavevials and heated at at 150° C. for 2 h under microwave irradiation. Ther.m. was cooled to r.t. and filtered over diatomaceous earth using DCM.The filtrate was washed with H₂O. The organic phase was separated, dried(MgSO₄), filtered and the solvent was evaporated in vacuo. The residuewas purified by flash column chromatography over silica gel (eluent:DCM/MeOH from 100/0 to 96/4). The product fractions were collected andconcentrated in vacuo, yielding 344 mg of intermediate 58 (35%).

b) Preparation of Intermediate 59 and intermediate 60

K₂CO₃ (580 mg, 4.2 mmol) was added to a sol. of intermediate 58 (462 mg,2.1 mmol) in THF (10 ml). The mixture was cooled to 0-5° C., and CH₃I(0.131 ml, 2.1 mmol) was added. The r.m. was stirred at r.t. for 3 h.The r.m. was filtered over diatomaceous earth using DCM. The filtratewas washed with water. The organic phase was separated, dried (MgSO₄),filtered and the solvent was evaporated in vacuo. The residue waspurified by Preparative SFC (Chiralpak Diacel AD 20×250 mm; Mobile phaseCO₂, MeOH with 0.2% iPrNH₂). The product fractions were collected andconcentrated in vacuo. Yield: 214 mg of intermediate 59 (43%); 70 mg ofintermediate 60 (14%).

c) Preparation of Intermediate 61

MeOH (40 ml) was added to Pd/C 10% (0.05 g) under a N₂ atmosphere.Subsequently, a 0.4% thiophene sol. in DIPE (0.1 ml) and intermediate 59(0.214 g, 0.91 mmol) were added. The r.m. was stirred at 25° C. under aH₂ atmosphere until 3 eq of H₂ was absorbed. The catalyst was filteredoff over diatomaceous earth and the filtrate was evaporated. The residuewas partitioned between DCM and H₂O. The organic phase was separated,dried (MgSO₄), filtered and the solvent was evaporated in vacuo. Yield:0.198 g of intermediate 61 (98%).

d) Preparation of Intermediate 62

MeOH (40 ml) was added to Pd/C 10% (0.05 g) under a N₂ atmosphere.Subsequently, a 0.4% thiophene sol. in DIPE (0.1 ml) and intermediate 60(0.070 g, 0.3 mmol) were added. The r.m. was stirred at 25° C. under aH₂ atmosphere until 3 eq of H₂ was absorbed. The catalyst was filteredoff over diatomaceous earth and the filtrate was evaporated. The residuewas partitioned between DCM and water. The organic phase was separated,dried (MgSO₄), filtered and the solvent was evaporated in vacuo. Yield:0.073 g of intermediate 62 (quantitative).

Example A28 Preparation of Intermediate 63

A stainless steel autoclave was loaded with intermediate 19 (370 mg,1.21 mmol), copper(I)oxide (10 mg), and a 0.5 M sol. of NH₃ in dioxane(30 ml, 15 mmol). The autoclave was closed and the r.m. was heated at150° C. for 18 h. Then, the r.m. was cooled, a sat. aq. NH₄OH sol. (5ml) was added, and the r.m. was heated at 150° C. for another 18 h. Ther.m. was cooled, and the r.m. was concentrated in vacuo. The residue waspartitioned between DCM and a saturated aq. NH₄Cl sol. The organic layerwas dried (MgSO₄), filtered and concentrated in vacuo. Yield: 240 mg ofintermediate 63 (82%), which was used as such in the next reaction step.

Example A29 a) Preparation of Intermediate 64

Na₂S₂O₅ (1.64 g, 8.62 mmol) and 4-fluoro-benzaldehyde (891 mg, 7.18mmol) were added to a sol. of3-bromo-5-trifluoromethyl-1,2-diaminobenzene (1.65 g, 6.47 mmol) in DMA(40 ml). The r.m. was stirred overnight at 70° C. Then, the r.m. wascooled to r.t. and poured into water. The solid was filtered off, washedwith water, and suspended in DIPE and some drops of 2-propanol. Theresulting solid was filtered off, washed with DIPE, and dried. Yield:1.95 g of intermediate 64 (84%).

b) Preparation of Intermediate 65

A 1 M sol. of LiHMDS in THF (9.2 ml, 9.2 mmol) was added dropwise atr.t. under a N₂ atmosphere to a sol. of intermediate 64 (1.65 g, 4.6mmol) in THF (50 ml). The r.m. was stirred at r.t. for 30 min, and thenCH₃I (3.26 g, 23 mmol) was added. The r.m. was stirred at r.t. for 1 hand then washed with a sat. aq. NaHCO₃ sol. and brine. The organic phasewas separated, dried (MgSO₄), filtered and the solvent was evaporated invacuo. The residue was purified by RP preparative HPLC [RP ShandonHyperprep® C18 BDS (8 μm, 250 g, I.D. 5 cm); mobile phase: a gradient of(0.25% NH₄HCO₃ sol. in water)/MeOH/CH₃CN]. The product fractions werecollected and worked up. Yield: 720 mg of intermediate 65 (42%).

Example A30 a) Preparation of Intermediate 66

Na₂S₂O₅ (5.56 g, 29.2 mmol) and 4-fluoro-benzaldehyde (2.91 g, 23.4mmol) were added to a sol. of 3-bromo-5-fluoro-1,2-diaminobenzene (4.0g, 19.5 mmol) in DMA (80 ml). The r.m. was stirred overnight at 70° C.Then, the r.m. was cooled to r.t. and poured into water. The solid wasfiltered off, washed with water, and dried. Yield: 6 g of intermediate66, used as such in the next reaction step.

b) Preparation of Intermediate 67

A suspension of 60% NaH in mineral oil (233 mg, 5.82 mmol) was addedunder a N₂ atmosphere to a cooled (5° C.) sol. of intermediate 66 (900mg, 2.91 mmol) in THF (5 ml). The r.m. was stirred at 5° C. for 30 min,and then isopropyliodide (1.98 g, 11.6 mmol) was added. The r.m. wasstirred at 130° C. for 2 h under microwave irradiation. The r.m. wascooled, extra THF was added and the mixture was washed with brine. Theorganic phase was separated, dried (MgSO₄), filtered and the solvent wasevaporated in vacuo. The residue was purified by flash columnchromatography over silica gel (eluent: heptane/DCM 50/50 to 0/100). Theproduct fractions were collected and the solvent was evaporated. Yield:350 mg of intermediate 67 (34%).

Example A31 a) Preparation of Intermediate 68

N-Iodosuccinimide (26.7 g, 119 mmol) and TFA (2.5 mL, 32.4 mmol) wereadded to a suspension of 2,4-dichloro-pyridin-3-ylamine (17.6 g, 108mmol) in CH₃CN (150 ml). The reaction mixture was stirred at r.t. for 16h., and then heated to 40° C. for 6 h. The r.m. was diluted with EtOAcand washed with a sat. aq. Na₂S₂O₃ sol. The aq. phase was extracted withEtOAc, and the combined organic layers were dried (MgSO₄), filtered andthe solvent was evaporated in vacuo. The residue was purified by flashcolumn chromatography over silica gel (eluent: DCM). The productfractions were collected and the solvent was evaporated. Yield: 22 g ofintermediate 68 (71%).

b) Preparation of Intermediate 69 and intermediate 70

A sol. of methylamine in THF (2 M, 25 ml, 50 mmol) was added to a sol.of intermediate 68 (4.8 g, 16.6 mmol) in EtOH (20 ml). The r.m. wasstirred at 160° C. under microwave irradiation for 8 h. Then, thesolvent was evaporated and the residue was partitioned between aq.NaHCO₃ sol. and DCM. The combined organic layers were dried (Na₂SO₄),filtered and concentrated in vacuo. The residue was purified by flashcolumn chromatography over silica gel (eluent: heptane/DCM 100/0 to0/100). The product fractions were collected and the solvent wasevaporated. Yield: 950 mg of intermediate 69 (20%) and 2900 mg ofintermediate 70 (62%).

c) Preparation of Intermediate 71

Et₃N (3.61 ml, 26.5 mmol) and 4-fluoro-benzoylchloride (1.68 g, 10.6mmol) were added to a sol. of intermediate 70 (2.5 g, 8.8 mmol) in DCM(100 ml), and the r.m. was stirred at r.t. for 4 h. The r.m. wasconcentrated in vacuo. Yield: 2.7 g of crude intermediate 71 (75%),which was used as such in the next step.

d) Preparation of Intermediate 72

Phosphoroxychloride (907 mg, 5.9 mmol) was added to a sol. ofintermediate 71 (2.0 g, 4.93 mmol) in dichloroethane (15 ml), and theresulting mixture was stirred and heated at 150° C. for 0.25 h undermicrowave irradiation. The r.m. was concentrated in vacuo, and theresidue was purified by flash column chromatography over silica gel(eluent: DCM/MeOH(NH₃) from 100/0 to 97/3). The product fractions werecollected and the solvent was evaporated. Yield: 1.56 g of intermediate72 (81%).

e) Preparation of Intermediate 73

Isopropenylboronic acid pinacol ester (867 mg, 5.16 mmol) and Pd(PPh₃)₄(298 mg, 0.258 mmol) was added to a sol. of intermediate 72 (2.0 g, 5.16mmol) in dioxane (8 ml) and an aq. NaHCO₃ sol. (4 ml), and the resultingmixture was stirred and heated at 160° C. for 10 min. under microwaveirradiation. The r.m. was cooled to r.t. and filtered over diatomaceousearth using EtOAc, and the filtrate was evaporated. The residue waspurified by flash column chromatography over silica gel (eluent:DCM/MeOH(NH₃) from 100/0 to 97/3). The product fractions were collectedand the solvent was evaporated. Yield: 1.25 g of intermediate 73 (80%).

f) Preparation of Intermediate 74

MeOH (40 ml) was added to Pt/C 5% (100 mg) under N₂ atmosphere.Subsequently, intermediate 73 (1.25 g, 4.14 mmol) was added. The r.m.was stirred at 25° C. under H₂ atmosphere until 1 eq of H₂ was absorbed.The catalyst was filtered off over diatomaceous earth and the filtratewas evaporated. Yield: 0.9 g of crude intermediate 74 (71%), which wasused as such in the next reaction step.

g) Preparation of Intermediate 75

Methylboronic acid (93 mg, 1.55 mmol) and Pd(PPh₃)₄ (71 mg, 0.062 mmol)was added to a sol. of intermediate 72 (600 mg, 0.31 mmol) in dioxane(10 ml) and an aq. NaHCO₃ sol. (5 ml). The resulting mixture was stirredand heated at 150° C. for 20 min. under microwave irradiation. The r.m.was cooled to r.t. and partitioned between water and DCM. The organicphase was separated, dried (MgSO₄), filtered and the solvent wasevaporated in vacuo. Yield: 180 mg of crude intermediate 75 which wasused as such in the next reaction step.

h) Preparation of Intermediate 76

Zn(CN)₂ (36 mg, 0.31 mmol) and Pd(PPh₃)₄ (30 mg, 0.026 mmol) were addedto a solution of intermediate 72 (200 mg, 0.52 mmol) in DMF (5 IL). Theresulting mixture was stirred and heated at 160° C. for 10 min. undermicrowave irradiation. The r.m. was cooled to r.t. and filtered throughdiatomaceous earth. The filtrate was conc. in vacuo and the residue waspurified by flash column chromatography over silica gel (eluent:DCM/MeOH(NH₃) 100/0 to 97/3). The product fractions were collected andthe solvent was evaporated. Yield: 0.14 g of intermediate 76 (95%).

Example A32 a) Preparation of Intermediate 77

4-Fluorobenzaldehyde (1.11 g, 8.93 mmol) and Na₂S₂O₄ (3.89 g, 22.3 mmol)were added to a sol. of 2-chloro-N-6-dimethyl-3-nitro-pyridin-4-amine(1.5 g, 7.44 mmol) in EtOH (15 ml). The r.m. was heated under microwaveconditions for 1 h at 160° C. The r.m. was cooled to r.t. and filteredthrough diatomaceous earth using EtOAc. This was repeated 3 x. Thecombined filtrates were evaporated and the residue was purified by RPpreparative HPLC [RP Vydec Denali C18 (10 μm, 250 g, I.D. 5 cm); mobilephase: a gradient of (0.25% NH₄HCO₃ sol. in water)/CH₃CN]. The productfractions were collected and worked up. Yield: 1.95 g of intermediate 77(32%).

Example A33 a) Preparation of Intermediate 78

Et₃N (1.87 ml, 13.8 mmol) and 4-fluoro-benzoylchloride (873 mg, 5.5mmol) were added to a sol. of intermediate 69 (1.3 g, 4.6 mmol) in DCM(80 ml), and the r.m. was stirred at r.t. for 4 h. The r.m. wasconcentrated in vacuo. Yield: 1.5 g of crude intermediate 78 (81%),which was used as such in the next reaction step.

b) Preparation of Intermediate 79

Phosphoroxychloride (121 mg, 0.79 mmol) was added to a sol. ofintermediate 78 (267 mg, 0.66 mmol) in dichloroethane (2 ml), and themixture was stirred and heated at 150° C. for 0.25 h under microwaveirradiation. The r.m. was concentrated in vacuo, and the residue waspurified by flash column chromatography over silica gel (eluent:DCM/MeOH(NH₃) from 100/0 to 97/3). The product fractions were collectedand the solvent was evaporated. Yield: 215 mg of intermediate 79 (84%).

c) Preparation of Intermediate 80

Isopropenylboronic acid pinacol ester (434 mg, 2.58 mmol) and Pd(PPh₃)₄(149 mg, 0.129 mmol) was added to a sol. of intermediate 79 (1.0 g, 2.58mmol) in dioxane (8 ml) and an aq. NaHCO₃ sol. (4 ml), and the resultingmixture was stirred and heated at 160° C. for 10 min. under microwaveirradiation. The r.m. was cooled to r.t. and filtered over diatomaceousearth using EtOAc, and the filtrate was evaporated. The residue waspurified by flash column chromatography over silica gel (eluent:DCM/MeOH(NH₃) from 100/0 to 97/3). The product fractions were collectedand the solvent was evaporated. Yield: 0.72 g of intermediate 80 (92%).

d) Preparation of Intermediate 81

MeOH (40 ml) was added to Pt/C 5% (100 mg) under N₂ atmosphere.Subsequently, intermediate 80 (0.75 g, 2.49 mmol) was added. The r.m.was stirred at 25° C. under H₂ atmosphere until 1 eq of H₂ was absorbed.The catalyst was filtered off over diatomaceous earth and the filtratewas evaporated. Yield: 0.55 g of crude intermediate 81 (73%), which wasused as such in the next reaction step.

e) Preparation of Intermediate 82

Cyclopropylboronic acid (86 mg, 1.0 mmol) and Pd(PPh₃)₄ (78 mg, 0.067mmol) was added to a sol. of intermediate 79 (260 mg, 0.67 mmol) indioxane (6 ml) and an aq. NaHCO₃ sol. (3 ml). The mixture was stirredand heated at 160° C. for 10 min. under microwave irradiation. The r.m.was cooled to r.t. and filtered over diatomaceous earth using EtOAc, andthe filtrate was evaporated. The residue was purified by flash columnchromatography over silica gel (eluent: DCM/MeOH(NH₃) from 100/0 to97/3). The product fractions were collected and the solvent wasevaporated. Yield: 0.15 g of intermediate 82 (74%).

Example A34 a) Preparation of Intermediate 83

Phosphoroxychloride (1.25 ml, 13.7 mmol) was added to DMF (3.5 ml) at 0°C. and the mixture was stirred for 0.5 h at this temperature.Intermediate 16 (1 g, 3.44 mmol) was added at 0° C., and the r.m. wasstirred at r.t. and DMF (5 ml) was added. The r.m. was stirred at r.t.overnight. The r.m. was poured into on ice and the mixture wasneutralized by adding NaHCO₃. The mixture was extracted with DCM. Theorganic layer was dried (MgSO₄), filtered and the solvent was evaporatedin vacuo. The residue was triturated with DIPE. The solid was collectedand dried. Yield: 0.625 g of intermediate 83 (57%).

b) Preparation of Intermediate 84

NaBH₄ (28 mg, 0.75 mmol) was added to a solution of intermediate 83 (200mg, 0.63 mmol) in MeOH (5 ml) and THF (2 ml). The r.m. was stirred atr.t for 15 min, then the solvents were removed in vacuo. The residue waspartitioned between DCM and water. The organic layer was dried (MgSO₄),filtered and the solvent was evaporated in vacuo. Yield: 90 mg ofintermediate 84 (45%).

c) Preparation of Intermediate 85

Thionylchloride (33 mg, 0.28 mmol) was added to intermediate 84 (90 mg,0.28 mmol) in DCM (2 ml). The r.m. was stirred at r.t for 30 min and anaq.sat. NaHCO₃ sol. was added. The organic layer was separated, filteredover diatomaceous earth and the filtrate was concentrated. Yield: 90 mgof intermediate 85 (95%).

d) Preparation of Intermediate 86

A 0.5 M NaOMe solution in MeOH (0.64 ml, 0.32 mmol) was added to a sol.of intermediate 85 (90 mg, 0.265 mmol) in MeOH (2 ml). The r.m. wasstirred at r.t for 30 min, then the solvents were removed in vacuo. Theresidue was partitioned between DCM and H₂O. The organic layer wasfiltered over diatomaceous earth and the filtrate was concentrated. Theresidue was triturated with DIPE and dried in vacuo. Yield: 60 mg ofintermediate 86 (67%).

e) Preparation of Intermediate 87

A solution of KOtBu (0.87 g, 7.74 mmol) in THF (7 ml) was added to asuspension of methoxymethylenetriphenylphosphonium chloride (1.53 g,4.47 mmol) in THF (3 ml) at −15° C. The r.m. was stirred for 30 min.Subsequently, a solution of intermediate 83 (0.95 g, 3 mmol) in THF (3ml) was added at 5° C., and the r.m. was stirred for 1 h at r.t. Ther.m. was partitioned between DCM and H₂O. The organic layer was dried(MgSO4), filtered and the solvent was evaporated in vacuo. The residuewas purified by column chromatography over silicagel (eluent: DCM/MeOH99/1). The product fractions were collected and the solvent wasevaporated in vacuo. Yield: 700 mg of intermediate 87 as an E/Z mixture(68%).

Example A35 a) Preparation of Intermediate 88

1-Iodo-2,5-pyrrolidinedione (5.54 g, 24.6 mmol) was added to8-bromo-2-(2-trifluoromethyl-phenyl)-imidazo[1,2-a]pyridine (preparedfrom 3-bromo-2-pyridinamine and2-bromo-1-(2-trifluoromethyl-phenyl)ethanone, according to example A9;5.6 g, 16.4 mmol) in DCM (50 ml). The r.m. was stirred at r.t. for 24 h,diluted with extra DCM, then washed with a 15% aq. NaOH solution,followed by a sat. aq. NaHSO₃ solution. The organic layer was dried(MgSO₄), filtered, concentrated in vacuo. Yield: 7.2 g of intermediate88 (94%).

b) Preparation of Intermediate 89

A mixture of intermediate 88 (350 mg, 0.75 mmol), 3-methoxy-propyne (58mg, 0.82 mmol), PdCl₂(PPh₃)₂ (20 mg, 0.028 mmol), CuI (5 mg, 0.027 mmol)in Et₃N (3 ml) was stirred at 50° C. for 20 h under a N₂ atmosphere. Themixture was partitioned between DCM and H₂O. The organic layer was dried(MgSO₄), filtered, and concentrated in vacuo. The residue was purifiedby column chromatography over silicagel (eluent: DCM/MeOH 99/1). Theproduct fractions were collected and the solvent was evaporated invacuo. Yield: 100 mg of intermediate 89 (33%).

c) Preparation of Intermediate 90

Intermediate 4 (50 mg, 0.24 mmol), Pd₂(dba)₃ (22 mg, 0.024 mmol), X-phos(23 mg, 0.049 mmol) and Cs₂CO₃ (240 mg, 0.73 mmol) were added to asolution of intermediate 89 (100 mg, 0.24 mmol) in 2-methyl-2-propanol(10 ml) under a N₂ atmosphere. The r.m. was heated at 100° C. for 20 h.Then, water was added and the mixture was extracted with DCM. Thecombined organic layers were dried (MgSO₄), filtered and the solvent wasevaporated. The residue was purified by flash chromatography oversilicagel (eluent: DCM/MeOH(NH₃) from 100/0 to 99/1). The productfractions were collected and the solvent was evaporated in vacuo. Yield:30 mg of intermediate 90 (23%).

Example A36 a) Preparation of Intermediate 91

A mixture of 3-bromo-5-fluoro-1,2-diaminobenzene (10.5 g, 51 mmol) andurea (3.84 g, 64 mmol) in xylene (100 ml) was stirred at refluxovernight. Subsequently, the r.m. was cooled to r.t., and the resultingprecipitate was filtered off. The solid was suspended in an aq. 1 N HClsol., and filtered off again, then dried. The resulting solid wastriturated with DIPE. Yield: 9.5 g of intermediate 91 (80%).

b) Preparation of Intermediate 92

Phosphoroxychloride (30 ml) was added slowly to intermediate 91 (3.0 g,13 mmol), followed by an aq. conc. HCl sol. (1 ml). The r.m. was heatedat reflux for 2 days. The r.m. was concentrated in vacuo. The residuewas partitioned between DCM and an aq. NaHCO₃ sol. The organic layer wasdried (MgSO₄), filtered and evaporated. Yield: 3.0 g (93%) of crudeintermediate 92.

c) Preparation of Intermediate 93

A suspension of 60% NaH in mineral oil (721 mg, 18 mmol) was added undera N₂ atmosphere to a cooled (5° C.) sol. of intermediate 92 (3.0 g, 12mmol) in DMF (40 ml). The r.m. was stirred at 5° C. for 30 min, and thenCH₃I (8.53 g, 60 mmol) was added. The r.m. was stirred at r.t. for 3 h,and then partitioned between water and EtOAc. The organic phase wasseparated, dried (MgSO₄), filtered and the solvent was evaporated invacuo. The residue was purified by flash column chromatography oversilica gel (eluent: heptane/EtOAc 80/20 to 50/50). The product fractionswere collected and the solvent was evaporated. Yield: 850 mg ofintermediate 93 (27%).

d) Preparation of Intermediate 94

A mixture of intermediate 93 (760 mg, 2.88 mmol), and pyrrolidine (1.03g, 14.4 mmol) in NMP (15 ml) was heated at 180° C. under microwaveirradiation for 10 min. The r.m. was cooled to r.t., and poured into H₂O(100 ml). The resulting precipitate was filtered off, and washed withH₂O. The solid was dried and triturated with DIPE. Yield: 675 mg (78%)of intermediate 94.

Example A37 a) Preparation of Intermediate 95

2-Chloro-aetaldehyde (6 M, 1.0 ml, 6.0 mmol) and Na₂S₂O₅ (1.14 g, 6.0mmol) were added to a sol. of intermediate 18 (800 mg, 3.98 mmol) in DMA(10 ml). The r.m. was stirred at r.t. for 2 h. The r.m. was poured intoH₂O. The solid was filtered off, washed with H₂O and suspended in DIPE.The solid was filtered off, washed with DIPE, and dried. Yield: 0.15 gof intermediate 95 (15%).

b) Preparation of Intermediate 96

A suspension of 60% NaH in mineral oil (193 mg, 4.82 mmol) was addedunder a N₂ atmosphere to a sol. of 2-propanol (232 mg, 3.85 mmol) in DMF(10 ml). The r.m. was stirred at r.t. for 30 min, and then intermediate95 (0.5 g, 1.93 mmol) was added. The r.m. was stirred at r.t. for 2 h,and then partitioned between H₂O and EtOAc. The organic phase wasseparated, dried (MgSO₄), filtered and the solvent was evaporated invacuo. The residue was purified by flash column chromatography oversilica gel (eluent: DCM/MeOH(NH₃) 100/0 to 95/5). The product fractionswere collected and the solvent was evaporated. Yield: 120 mg ofintermediate 96 (15%).

Example A38 a) Preparation of Intermediate 97

Ethyl 8-iodo-6-(trifluoromethyl)imidazo[1,2-a]pyridine-2-carboxylate(0.60 g 1.56 mmol) and LiOH (38 mg, 1.6 mmol) were dissolved in amixture of THF/H₂O (10 ml/10 ml) and the mixture was stirred for 20 h atr.t. The mixture was acidified with an aq. 1 N HCl solution until theproduct precipitated. The precipitate was filtered off, and dried invacuo. Yield: 0.5 g of intermediate 97 (90%).

b) Preparation of Intermediate 98

A 2 M sol. of dimethylamine in THF (0.58 ml, 1.16 mmol) in THF (10 ml)was added to a mixture of intermediate 97 (500 mg, 1.4 mmol) and HBTU(533 mg, 1.4 mmol) in DMF (10 ml). Then DIPEA (0.98 ml, 5.62 mmol) wasadded, and the r.m. was stirred for 18 h at r.t. The mixture was dilutedwith DCM, and washed with an aq. 0.5 N NaOH sol. and H₂O. The organiclayer was dried (MgSO₄), filtered and concentrated in vacuo. The residuewas purified by flash column chromatography over silicagel (eluent:DCM/MeOH (NH₃) 99/1). The product fractions were collected and thesolvent was evaporated in vacuo. Yield: 490 mg of intermediate 98 (90%).

Example A39 a) Preparation of Intermediate 99

BF₃ etherate (0.154 ml, 1.32 mmol) was added to a mixture of4-fluorophenylglyoxal hydrate (4.5 g, 26.5 mmol) and2-amino-3-bromopyridine (4.72 g, 26.5 mmol) in DCM (100 ml). The r.m.was stirred at r.t. for 6 h. The resulting precipitate was filtered offand dried in vacuo. Yield: 4 g of intermediate 99 (49%).

b) Preparation of Intermediate 100

NaH (60% in mineral oil, 414 mg, 10.3 mmol) was added to an ice-cooledsolution of intermediate 99 (1.06 g, 3.45 mmol) in DMF (50 ml). The r.m.was stirred at 0° C. for 15 min, then CH₃I (0.258 ml, 4.14 mmol) wasadded and the resulting r.m. was stirred at r.t. overnight. The r.m. wasquenched with water, and then concentrated in vacuo. The residue waspartitioned between DCM and H₂O. The organic layer was dried (MgSO₄),filtered and concentrated in vacuo. The residue was purified by flashcolumn chromatography over silicagel (eluent: n-heptane/EtOAc 100/0 to50/50). The product fractions were collected and the solvent wasevaporated in vacuo. The residue was suspended in DIPE and dried invacuo. Yield: 445 mg of intermediate 100 (40%).

Example A40 Preparation of Intermediate 101

3,5-Dibromo-pyrazin-2-ylamine (5 g, 19.8 mmol), 2-chloro-acetone (18.3g, 198 mmol) and dioxane (40 ml) were heated at reflux temperature for16 h. The r.m was concentrated under reduced pressure, and the residuewas triturated with DIPE. Yield: 3.6 g of intermediate 101 (55%).

Example A41 a) Preparation of Intermediate 102

Bromine (3.15 ml, 61.3 mmol) was added dropwise at 15° C. to a solutionof 4-amino-3-nitro-benzonitrile (10 g, 61.3 mmol) in AcOH (80 ml). Ther.m was stirred at r.t overnight, and extra bromine (1.58 ml, 30.7 mmol)was added. After another 6 h at r.t., again bromine (0.79 ml, 15.3 mmol)was added, and stirring continued at r.t. over weekend. The r.m. wasconcentrated under reduced pressure, and the residue was triturated withwater. The residue was purified by flash column chromatography oversilicagel (eluent: DCM/MeOH 98/2). The product fractions were collectedand the solvent was evaporated in vacuo. Yield: 6.24 g of intermediate102 (35%).

b) Preparation of Intermediate 103

4-Fluorobenzaldehyde (0.96 ml, 9.1 mmol) and Na₂S₂O₄ (5.04 g, 28.9 mmol)were added to a sol. of intermediate 102 (2 g, 6.86 mmol) in EtOH (10ml). The r.m. was heated under microwave conditions at 150° C. for 45min. The r.m. was cooled to r.t. and filtered through diatomaceousearth. The filtrate was evaporated and the residue was dissolved in DMF.H₂O was added. The resulting precipitate was filtered off and washedwith H₂O. The residue was suspended in toluene, and the solvent wasremoved under reduced pressure. Yield: 1.6 g of intermediate 103 (70%).

c) Preparation of Intermediate 104

A suspension of 60% NaH in mineral oil (569 mg, 14.2 mmol) was addedunder a N₂ atmosphere to a sol. of intermediate 103 (3 g, 9 mmol) in DMF(20 ml) at 5° C. The r.m. was stirred at 5° C. for 15 min, and then CH₃I(1.48 ml, 23.7 mmol) was added. The r.m. was stirred at r.t. for 30 min,and partitioned between EtOAc and H₂O. The organic phase was separated,dried (MgSO₄), filtered and the solvent was evaporated in vacuo. Theresidue was purified by flash column chromatography over silica gel(eluent: DCM/MeOH 100/0 to 99/1). The product fractions were collectedand the solvent was evaporated. The residue was purified further bypreparative HPLC [RP Shandon Hyperprep C18 BDS (8 nm, 250 g, I.D. 5 cm);mobile phase: (0.25% NH₄CO₃ sol. in water, CH₃CN/MeOH)]. The productfractions were collected and concentrated under reduced pressure. Yield:1.1 g of intermediate 104 (37%).

Example A42 a) Preparation of Intermediate 105

MeOH (150 ml) was added to Pt/C 5% (1 g) under N₂ atmosphere.Subsequently, a 0.4% thiophene sol. in DIPE (2 ml) and2-bromo-4-methoxy-6-nitroaniline (5 g, 20.2 mmol) were added. The r.m.was stirred at 25° C. under H₂ atmosphere until 3 eq of H₂ was absorbed.The catalyst was filtered off over diatomaceous earth and the filtratewas concentrated in vacuo. Yield: 4.33 g of intermediate 105 (99%),which was used as such in the next step.

b) Preparation of Intermediate 106

4-Fluoro-benzaldehyde (1.17 ml, 11.1 mmol) and Na₂S₂O₅ (2.63 g, 13.8mmol) were added to a sol. of intermediate 105 (2 g, 9.2 mmol) in DMA(40 ml). The r.m. was stirred at 90° C. overnight. Then, the r.m. waspoured into water, resulting in the precipitation of a solid. The solidwas filtered off, washed with water, and suspended in DIPE. Theresulting solid was filtered off, washed with DIPE, and dried. Yield:2.9 g of intermediate 106 (98%).

c) Preparation of Intermediate 107

A suspension of 60% NaH in mineral oil (486 mg, 12.1 mmol) was addedunder a N₂ atmosphere to a sol. of intermediate 106 (2.6 g, 8.1 mmol) inDMF (15 ml) at 5° C. The r.m. was stirred at 5° C. for 30 min, and thenmethyliodide (1.26 ml, 20.2 mmol) was added. The r.m. was stirred atr.t. for 3 h., and partitioned between EtOAc and water. The organicphase was separated, dried (MgSO₄), filtered and the solvent wasevaporated in vacuo. The residue was purified by flash columnchromatography over silica gel (eluent: DCM/MeOH 100/0 to 99/1). Theproduct fractions were collected and the solvent was evaporated. Yield:1.25 g of intermediate 107 (46%).

Example A43 a) Preparation of Intermediate 108

Conc. HNO₃ (12.5 ml) was added to a sol. of 3,5-dibromo-pyridine N-oxide(4.5 g, 17.8 mmol) in conc. H₂SO₄ (16 ml). The r.m. was refluxed for 4h., then cooled and poured onto ice-water. The resulting precipitate wascollected by filtration and dried. Yield: 3.1 g of intermediate 108(58%), which was used as such in the next step.

b) Preparation of Intermediate 109

A 2 M sol. of methylamine in THF (7.15 ml, 14.3 mmol) was added to amixture of intermediate 108 (2.66 g, 8.9 mmol) in THF (100 ml). The r.m.was stirred at 60° C. for 2 days, then conc. in vacuo. The residue waspartitioned between DCM and an aq. NaHCO₃ sol. The organic phase wasseparated, dried (Na₂SO₄), filtered and the solvent was evaporated invacuo. The residue was purified by flash column chromatography oversilica gel (eluent: heptane/DCM/MeOH(NH₃) 100/0/0 to 0/100/0 to0/70/30). The product fractions were collected and the solvent wasevaporated. Yield: 1.2 g of intermediate 109 (54%).

c) Preparation of Intermediate 110

4-Fluorobenzaldehyde (252 mg, 2.0 mmol) and Na₂S₂O₄ (1.18 g, 6.8 mmol)were added to a sol. of intermediate 109 (420 mg, 1.7 mmol) in EtOH (6ml). The r.m. was heated under microwave conditions at 160° C. for 45min. The r.m. was cooled to r.t. and diluted with EtOAc. The mixture waswashed with an aq. NaHCO3 sol. and brine. The organic phase wasseparated, dried (MgSO₄), filtered and the solvent was evaporated invacuo. The residue was purified by flash column chromatography oversilica gel (eluent: DCM/MeOH(NH₃) 100/0 to 97/3). The product fractionswere collected and the solvent was evaporated. Yield: 0.35 g ofintermediate 110 (68%).

Example A44 Preparation of Intermediate 111

A mixture of 6-amino-5-bromo-nicotinonitrile (4 g, 20.2 mmol) and1-bromo-4-methyl-2-pentanone (5.43 g, 30.3 mmol) in NMP (40 ml) washeated at 150° C. for 2 h. The r.m. was cooled to r.t. and poured intoan aq. 10% NaHCO₃ sol. The mixture was extracted with toluene. Theorganic layer was dried (MgSO₄), filtered and the solvent was evaporatedin vacuo. The residue was purified by flash column chromatography oversilica gel (eluent: n-heptane/EtOAc 100/0 to 50/50). The productfractions were collected and the solvent was evaporated. The residue wastriturated with DIPE. Yield: 2.9 g of intermediate 111 (52%).

B. Preparation of the Compounds Example B1 Preparation of Compound 1

Cs₂CO₃ (0.56 g, 1.72 mmol), Pd₂(dba)₃ (0.039 g, 0.043 mmol) and BINAP(0.053 g, 0.086 mmol) were added to a sol. of intermediate 16 (0.25 g,0.859 mmol) and intermediate 2 (0.184 g, 0.902 mmol) in DMF (80 ml). Ther.m. was purged with N₂ for 5 min. and was then heated at 100° C. for 18h. The r.m. was concentrated under reduced pressure. The residue wasdissolved in DCM and the organic phase was washed with H₂O, dried(MgSO4), filtered and the solvent was evaporated in vacuo. The residuewas purified by preparative HPLC [RP Shandon Hyperprep® C18 BDS (8 μm,250 g, I.D. 5 cm); mobile phase: (0.25% NH₄CO₃ sol. in water,MeOH+CH₃CN). The product fractions were collected and concentrated underreduced pressure. The residue was suspended in DIPE and the precipitatewas collected by filtration and dried under vacuum at 60° C. Yield:0.068 g of compound 1 (19%).

Example B2 Preparation of Compound 2

Cs₂CO₃ (0.616 g, 1.892 mmol), Pd₂(dba)₃ (0.043 g, 0.047 mmol) and BINAP(0.058 g, 0.094 mmol) were added to a sol. of intermediate 5 (0.3 g,0.95 mmol) and intermediate 2 (0.203 g, 0.993 mmol) in DMF (20 ml). Themixture was purged with N₂ for 5 min. and was then heated at 100° C. for18 h. The r.m. was concentrated under reduced pressure. The residue wasdissolved in DCM and the organic phase was washed with H₂O, dried(MgSO4), filtered and the solvent was evaporated in vacuo. The residuewas purified by preparative HPLC [RP Shandon Hyperprep® C18 BDS (8 μm,250 g, I.D. 5 cm); mobile phase: (0.25% NH₄CO₃ sol. in water,MeOH+CH₃CN). The product fractions were collected and concentrated underreduced pressure. The solid product was dried under vacuum at 60° C.Yield: 0.129 g of compound 2 (30%).

Example B3 Preparation of Compound 3

Intermediate 16 (0.230 g, 0.793 mmol), Pd₂(dba)₃ (0.060 g, 0.066 mmol),dicyclohexyl[2′,4′,6′-tris(1-methylethyl)[1,1′-biphenyl]-2-yl]phosphine(0.069 g, 0.145 mmol) and Cs₂CO₃ (0.646 g, 1.98 mmol) were added to asol. of intermediate 4 (0.135 g, 0.661 mmol) in 2-methyl-2-propanol (10ml), and the r.m. was heated at 110° C. overnight. After cooling, H₂Owas added and the product was extracted with DCM. The organic phase wasdried (MgSO4) filtered and concentrated under reduced pressure. Theresidue was purified by Flash column chromatography over Silica gel(eluent: DCM/MeOH from 100/0 to 98/2) and the product fractions werecollected and worked up. The residue was crystallized from DIPE,filtered and dried under vacuum at 80° C. Yield: 0.032 g of compound 3(11.7%).

Example B4 d) Preparation of Compound 4

A sol. of intermediate 7 (0.070 g, 0.14 mmol), 5-bromo-2-methylthiazole(0.051 g, 0.29 mmol), Cs₂CO₃ (0.047 g, 0.14 mmol), Pd(PPh₃)₄ (0.033 g,0.29 mmol) and a 3 N NaOH aq. sol. (0.024 ml, 0.07 mmol) in 1,4-dioxane(10 ml) was purged with N₂ for 2 min. The r.m. was stirred at 80° C.overnight. After cooling, H₂O was added and the product was extractedwith DCM. The organic phase was washed with brine, dried (Na₂SO4)filtered and concentrated under reduced pressure. The residue waspurified by preparative HPLC [RP Shandon Hyperprep® C18 BDS (8 μm, 250g, I.D. 5 cm); mobile phase: (0.25% NH₄CO₃ sol. in water, MeOH+CH₃CN)].The product fractions were collected and concentrated under reducedpressure. Yield: 0.013 g of compound 4 (19.7%).

Example B5 Preparation of Compound 5

A sol. of intermediate 6 (0.220 g, 0.50 mmol),2,4-dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,3-thiazole(859833-13-9, 0.240 g, 1.0 mmol), Pd(PPh₃)₄ (0.116 g, 0.1 mmol), Cs₂CO₃(0.163 g, 0.50 mmol) and a 3N NaOH aq. sol. (0.084 ml, 0.251 mmol) in1,4-dioxane (20 ml) was purged with N₂ for 2 min. The r.m. was stirredat 80° C. overnight. After cooling, the r.m. was concentrated, H₂O wasadded and the product was extracted with EtOAc. The organic phase waswashed with brine, dried (Na₂SO4) filtered and concentrated underreduced pressure. The residue was purified by preparative HPLC [RPShandon Hyperprep® C18 BDS (8 μm, 250 g, I.D. 5 cm); mobile phase: (0.5%NH₄OAc sol. in water+10% CH₃CN, CH₃CN)]. The product fractions werecollected and concentrated under reduced pressure. Yield: 0.078 g ofcompound 5 (33%).

Example B6 Preparation of Compound 6

A sol. of intermediate 6 (0.220 g, 0.502 mmol), Pd(PPh₃)₄ (0.116 g, 0.1mmol) in 1,4-dioxane (20 ml) was purged with N₂ for 2 min, and the r.m.was stirred at r.t. for 10 min.1H-Pyrazole-1,3-dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)(0.223 g, 1.0 mmol), and Cs₂CO₃ (0.327 g, 1.0 mmol), were added into ther.m. After stirring for 10 min at r.t. a 3 N NaOH aq. sol. (0.084 ml,0.251 mmol) was added. The r.m. was stirred at 80° C. overnight. Aftercooling, the r.m. was concentrated, H₂O was added and the product wasextracted with EtOAc. The organic phase was washed with brine, dried(Na₂SO₄) filtered and concentrated under reduced pressure. The residuewas purified by preparative HPLC [RP Shandon Hyperprep® C18 BDS (8 μm,250 g, I.D. 5 cm); mobile phase: (0.25% NH₄CO₃ sol. in water, CH₃CN)].The product fractions were collected and concentrated under reducedpressure. Yield: 0.055 g of compound 6 (24%).

Example B7 Preparation of Compound 7

Cs₂CO₃ (1.137 g, 3.491 mmol), Pd₂(dba)₃ (0.080 g, 0.087 mmol) and BINAP(0.109 g, 0.175 mmol) were added to a sol. of intermediate 16 (0.508 g,1.75 mmol) and intermediate 9 (0.400 g, 1.83 mmol) in DMF (30 ml). Themixture was purged with N₂ for 5 min. The r.m. was then heated at 100°C. for 18 h and subsequently concentrated under reduced pressure. Theresidue was dissolved in DCM and the organic phase was washed with H₂O,dried (MgSO4), filtered and the solvent evaporated in vacuo. The residuewas purified by preparative HPLC [RP Shandon Hyperprep® C18 BDS (8 μm,250 g, I.D. 5 cm); mobile phase: (0.25% NH₄CO₃ sol. in water,MeOH+CH₃CN)]. The product fractions were collected and evaporated off.The residue was re-purified by flash chromatography over Silica gel(eluent: DCM/MeOH from 100/0 to 95/5). The product fractions werecollected and the solvent was evaporated. The residue was crystallizedfrom n-heptane/DIPE, and the precipitate was filtered and dried undervacuum at 50° C. Yield: 0.099 g of compound 7 (13.2%).

Example B8 Preparation of Compound 8

Cs₂CO₃ (0.261 g, 0.80 mmol), Pd₂(dba)₃ (0.018 g, 0.02 mmol) and BINAP(0.025 g, 0.04 mmol) were added to a sol. of intermediate 21 (0.115 g,0.4 mmol) and intermediate 9 (0.091 g, 0.42 mmol) in DMF (20 ml) and themixture was purged with N₂ for 5 min. The r.m. was heated at 100° C. for18 h and then concentrated under reduced pressure. The residue wasdissolved in DCM and the organic phase was washed with H₂O, dried(MgSO4), filtered and the solvent was evaporated in vacuo. The residuewas purified by preparative HPLC [RP Shandon Hyperprep® C18 BDS (8 μm,250 g, I.D. 5 cm); mobile phase: (0.25% NH₄CO₃ sol. in water,MeOH+CH₃CN)]. The product fractions were collected and concentratedunder reduced pressure. The solid residue was dried under vacuum at 60°C. Yield: 0.043 g of compound 8 (25.3%).

Example B9 Preparation of Compound 9

Intermediate 19 (0.305 g, 1 mmol), Pd₂(dba)₃ (0.091 g, 0.0.98 mmol),dicyclohexyl[2′,4′,6′-tris(1-methylethyl)[1,1′-biphenyl]-2-yl]phosphine(0.095 g, 0.2 mmol) and Cs₂CO₃ (0.978 g, 3.0 mmol) were added to a sol.of intermediate 13 (0.172 g, 0.983 mmol) in 2-methyl-2-propanol (20 ml),and the r.m. was heated at 110° C. overnight. The r.m. was thenconcentrated under reduced pressure. The residue was dissolved in DCMand the organic phase was washed with H₂O, dried (MgSO₄) filtered andconcentrated under reduced pressure. The residue was purified by flashchromatography over Silica gel (eluent: DCM/MeOH(NH₃) from 100/0 to98/2). The product fractions were collected and the solvent wasevaporated. Yield: 0.160 g of compound 9 (37.4%).

Example B10 Preparation of Compound 10

Intermediate 19 (0.300 g, 0.983 mmol), Pd₂(dba)₃ (0.090 g, 0.098 mmol),dicyclohexyl[2′,4′,6′-tris(1-methylethyl)[1,1′-biphenyl]-2-yl]phosphine(0.103 g, 0.216 mmol) and Cs₂CO₃ (0.961 g, 2.95 mmol) were added to asol. of intermediate 15 (0.172 g, 1 mmol) in 2-methyl-2-propanol (10ml), and the r.m. was heated at 110° C. overnight. After cooling, H₂Owas added and the mixture was stirred for 10 min prior to being dilutedwith DCM and filtered through diatomaceous earth. The filtrate waswashed with H₂O and the organic phase was dried (MgSO₄) and concentratedunder reduced pressure. The residue was purified by flash chromatographyover Silica gel (eluent: DCM/MeOH from 100/0 to 95/5). The productfractions were collected and the solvent was evaporated. Yield: 0.169 gof compound 10 (43%).

Example B11 Preparation of Compound 11

Intermediate 20 (0.210 g, 0.684 mmol), Pd₂(dba)₃ (0.062 g, 0.068 mmol),dicyclohexyl[2′,4′,6′-tris(1-methylethyl)[1,1′-biphenyl]-2-yl]phosphine(0.071 g, 0.15 mmol) and Cs₂CO₃ (0.688 g, 2.05 mmol) were added to asol. of intermediate 2 (0.139 g, 0.684 mmol) in 2-methyl-2-propanol (10ml), and the r.m. was heated at 110° C. for 6 h. After cooling, H₂O wasadded and the product was extracted with DCM. The organic phase wasdried (MgSO4) and concentrated under reduced pressure. The residue waspurified by preparative HPLC [RP Shandon Hyperprep® C18 BDS (8 μm, 250g, I.D. 5 cm); mobile phase: (0.25% NH₄CO₃ sol. in water, CH₃CN)]. Theproduct fractions were collected and concentrated under reducedpressure. Yield: 0.197 g of compound 11 (67%).

Example B12 Preparation of Compound 12

Intermediate 19 (0.660 g, 2.16 mmol), Pd₂(dba)₃ (0.198 g, 0.216 mmol),dicyclohexyl[2′,4′,6′-tris(1-methylethyl)[1,1′-biphenyl]-2-yl]phosphine(0.226 g, 0.476 mmol) and Cs₂CO₃ (2.115 g, 6.49 mmol) were added to asol. of intermediate 2 (0.441 g, 2.16 mmol) in 2-methyl-2-propanol (30ml), and the r.m. was heated at 90° C. for 72 hours. After cooling, thesolvent was evaporated. H₂O was added and the mixture was extracted withDCM. The organic layer was separated, dried (MgSO₄) and concentratedunder reduced pressure. The residue was purified by flash chromatographyover Silica gel (eluent: DCM/MeOH(NH₃) from 100/0 to 99/1). The productfractions were collected and the solvent was evaporated. The product wascrystallized from DIPE, filtered off and dried under vacuum. Yield:0.465 g of compound 12 (50%).

Example B13 Preparation of Compound 13

Intermediate 19 (0.304 g, 0.99 mmol), Pd₂(dba)₃ (0.091 g, 0.099 mmol),dicyclohexyl[2′,4′,6′-tris(1-methylethyl)[1,1′-biphenyl]-2-yl]phosphine(0.104 g, 0.22 mmol) and Cs₂CO₃ (0.976 g, 3.0 mmol) were added to a sol.of intermediate 26 (0.203 g, 1.0 mmol) in 2-methyl-2-propanol (8 ml),and the r.m. was heated at 110° C. for 16 hours. After cooling, H₂O wasadded and the mixture was extracted with DCM. The organic layer wasseparated, dried (MgSO₄) and concentrated under reduced pressure. Theresidue was purified by flash chromatography over Silica gel (eluent:DCM isocratic). The product fractions were collected and the solvent wasevaporated. The product was crystallized from DIPE, filtered off anddried under vacuum. Yield: 0.065 g of compound 13 (15.2%).

Example B14 Preparation of Compound 14

Intermediate 24 (0.298 g, 1.14 mmol), Pd₂(dba)₃ (0.104 g, 0.114 mmol),dicyclohexyl[2′,4′,6′-tris(1-methylethyl)[1,1′-biphenyl]-2-yl]phosphine(0.108 g, 0.228 mmol) and Cs₂CO₃ (1.108 g, 3.42 mmol) were added to asol. of intermediate 4 (0.233 g, 1.14 mmol) in 2-methyl-2-propanol (15ml), and the r.m. was heated at 110° C. overnight. After cooling, H₂Owas added and the product was extracted with DCM. The organic phase wasdried (MgSO4) filtered and concentrated under reduced pressure. Theresidue was crystallized in DIPE/CN₃CN and the precipitate was filteredand dried in vacuum. Yield: 0.246 g of compound 14 (50%).

Example B15 Preparation of Compound 15

Intermediate 34 (0.320 g, 0.96 mmol), Pd₂(dba)₃ (0.088 g, 0.096 mmol),dicyclohexyl[2′,4′,6′-tris(1-methylethyl)[1,1′-biphenyl]-2-yl]phosphine(0.091 g, 0.192 mmol) and Cs₂CO₃ (0.939 g, 2.881 mmol) were added to asol. of intermediate 31 (0.320 g, 0.96 mmol) in 2-methyl-2-propanol (15ml), and the r.m. was heated at 100° C. overnight. After cooling, H₂Owas added and the product was extracted with DCM. The organic phase wasdried (MgSO₄) filtered and concentrated under reduced pressure. Theresidue was purified by flash chromatography over Silica gel (eluent:DCM/MeOH from 100/0 to 98/2). The product fractions were collected andthe solvent was evaporated. Yield: 0.216 g of compound 15 (51.5%).

Example B16 Preparation of Compound 16

Intermediate 19 (0.336 g, 1.10 mmol), Pd₂(dba)₃ (0.101 g, 0.11 mmol),dicyclohexyl[2′,4′,6′-tris(1-methylethyl)[1,1′-biphenyl]-2-yl]phosphine(0.115 g, 0.242 mmol) and Cs₂CO₃ (1.077 g, 3.31 mmol) were added to asol. of intermediate 4 (0.225 g, 1.10 mmol) in 2-methyl-2-propanol (15ml), and the r.m. was heated at 90° C. for 72 h. After cooling, thesolvent was evaporated, H₂O was added and the product was extracted withDCM. The organic phase was dried (MgSO4) filtered and concentrated underreduced pressure. The residue was purified by flash chromatography overSilica gel (eluent: DCM/MeOH from 100/0 to 99/1) and the productfractions were collected and the solvent was evaporated. The residue wascrystallized from DIPE, filtered and dried under vacuum at 80° C. Yield:0.220 g of compound 16 (46.6%).

Example B17 Preparation of Compound 17

Intermediate 41 (0.22 g, 0.84 mmol), Pd₂(dba)₃ (0.077 g, 0.084 mmol),dicyclohexyl[2′,4′,6′-tris(1-methylethyl)[1,1′-biphenyl]-2-yl]phosphine(0.080 g, 0.168 mmol) and Cs₂CO₃ (0.822 g, 2.52 mmol) were added to asol. of intermediate 43 (0.161 g, 0.841 mmol) in 2-methyl-2-propanol (15ml), and the r.m. was heated at 100° C. for 20 h. After cooling, thesolvent was evaporated, H₂O was added and the product was extracted withDCM. The organic phase was dried (MgSO4) filtered and the solvent wasevaporated. The residue was purified by flash chromatography over Silicagel (eluent: DCM/MeOH(NH₃) 99/1) and the product fractions werecollected and the solvent was evapoarted. Yield: 0.20 g of compound 17(57%).

Example B18 Preparation of Compound 18

Intermediate 34 (0.190 g, 0.57 mmol), Pd₂(dba)₃ (0.052 g, 0.057 mmol),dicyclohexyl[2′,4′,6′-tris(1-methylethyl)[1,1′-biphenyl]-2-yl]phosphine(0.054 g, 0.114 mmol) and Cs₂CO₃ (0.558 g, 1.71 mmol) were added to asol. of intermediate 48 (0.100 g, 0.571 mmol) in 2-methyl-2-propanol (10ml), and the r.m. was heated at 110° C. for 14 h. After cooling, H₂O wasadded and the product was extracted with DCM. The organic phase wasdried (MgSO₄) filtered and concentrated under reduced pressure. Theresidue was purified by flash chromatography over silica gel (eluent:DCM/MeOH(NH₃) from 100/0 to 98/2). The product fractions were collectedand the solvent was evaporated. Yield: 0.093 g of compound 18 (3.8%).

Example B19 Preparation of compound 169

A mixture of intermediate 90 (30 mg, 0.056 mmol), and Raney nickel (20mg), in THF (30 ml) was stirred at r.t. under H₂ (atmospheric pressure).After uptake of H₂ (2 eq), the catalyst was filtered off overdiatomaceous earth. The solvent was evaporated and the residue waspartitioned between DCM and H₂O. The organic layer was dried (MgSO₄),filtered and concentrated in vacuo. The residue was purified bypreparative HPLC [RP Vydac Denali C18 (10 μm, 250 g, I.D. 5 cm); mobilephase: (0.25% NH₄CO₃ sol. in water, CH₃CN)]. The product fractions werecollected and concentrated under reduced pressure. Yield: 1.1 mg ofcompound 169 (4%).

Example B20 Preparation of Compound 188

Intermediate 57 (0.224 g, 1.15 mmol), Pd(OAc)₂ (0.034 g, 0.15 mmol),Xantphos (0.133 g, 0.23 mmol) and Cs₂CO₃ (0.498 g, 1.53 mmol) were addedto a sol. of intermediate 63 (0.185 g, 0.76 mmol) in dioxane (3 ml), andthe r.m. was heated at 160° C. for 1 h under microwave irradiation.After cooling, H₂O was added and the product was extracted with DCM. Theorganic phase was dried (MgSO₄) and concentrated under reduced pressure.The residue was purified by preparative HPLC [RP Shandon Hyperprep® C18BDS (8 μm, 250 g, I.D. 5 cm); mobile phase: (0.25% NH₄CO₃ sol. in water,MeOH)]. The product fractions were collected and concentrated underreduced pressure. Yield: 0.040 g of compound 188 (13%).

Example B21 Preparation of Compound 128

Intermediate 34 (0.405 g, 1.17 mmol), Pd₂(dba)₃ (0.107 g, 0.12 mmol),X-Phos (0.122 g, 0.26 mmol) and Cs₂CO₃ (1.14 g, 3.5 mmol) were added toa sol. of intermediate 56 (0.250 g, 1.17 mmol) in 2-methyl-2-propanol(10 ml), and the r.m. was heated at 100° C. for 4 h. After cooling, H₂Owas added and the product was extracted with DCM. The organic phase wasdried (MgSO₄) filtered and concentrated under reduced pressure. Theresidue was purified by flash chromatography over Silica gel (eluent:DCM/MeOH(NH₃) from 100/0 to 98/2). The product fractions were collectedand the solvent was evaporated. The residue was triturated withDIPE/2-propanol. Yield: 0.284 g of compound 128 (52%).

Example B22 Preparation of Compound 165

A solution of compound 143 (prepared form intermediate 98 andintermediate 2, according to example B3, 150 mg, 0.33 mmol) in THF (5ml) was added slowly to a 1 M solution of CH₃Li in THF (1 ml, 1 mmol) at0° C. The mixture was stirred at r.t. for 2 h, and then an additional 1M sol. of CH₃Li in THF (1 ml, 1 mmol) was added and stirring wascontinued at r.t. for 1 h. An aq. 10% HCl solution was added and themixture was extracted with DCM. The organic phase was dried (MgSO₄)filtered and concentrated under reduced pressure. The residue waspurified by flash chromatography over Silica gel (eluent: DCM/MeOH(NH₃)from 100/0 to 99/1). The product fractions were collected and thesolvent was evaporated. Yield: 21 mg of compound 165 (15%).

Example B23 Preparation of Compound 120

A mixture of compound 123 (prepared form intermediate 104 andintermediate 2, according to example B18, 40 mg, 0.088 mmol), and Raneynickel (20 mg), in MeOH(NH₃) (40 ml) was stirred at r.t. under H₂(atmospheric pressure). After uptake of H₂ (2 eq), the catalyst wasfiltered off over diatomaceous earth. The solvent was evaporated and theresidue was purified by flash chromatography over silica gel (eluent:DCM/MeOH(NH₃) 90/10). The product fractions were collected and thesolvent was evaporated. Yield: 7 mg of compound 120 (17%).

Example B24 Preparation of Compound 197

A 1:1 mixture of THF and MeOH (100 ml) was added to Pd/C (10%, 500 mg)under a N₂ atmosphere. Subsequently, a 0.4% thiophene solution in DIPE(0.5 ml), compound 198 (prepared according to example B3, 49 mg, 0.11mmol), and KOAc (13 mg, 0.13 mmol) were added, and the r.m. was stirredat 25° C. under a H₂ atmosphere until 1 eq of H₂ was absorbed. Thecatalyst was filtered off over diatomaceous earth. The filtrate wasevaporated and the residue was partitioned between DCM and a sat. aq.NaHCO₃ sol. The organic layer was dried (MgSO₄), filtered and thesolvent was evaporated. The residue was purified by flash chromatographyover silica gel (eluent: DCM/MeOH(NH₃) from 100/0 to 96/4). The productfractions were collected and the solvent was evaporated. Yield: 9.5 mgof compound 197 (21%).

Example B25 Preparation of Compound 179

A mixture of 4-(2-methyl-oxazol-5-yl)-phenylamine (615 mg, 3.53 mmol),intermediate 101 (933 mg, 3.21 mmol), and DIPEA (1.24 g, 9.62 mmol) inCH₃CN (10 ml) were heated at 200° C. under microwave irradiation for 1.5h. The volatiles were evaporated under reduced pressure and the residuewas partitioned between DCM and H₂O. The organic layer was dried(MgSO₄), filtered and the solvent was evaporated. The residue waspurified by flash chromatography over silica gel (eluent: DCM/MeOH(NH₃)95/5). The fractions containing product were collected and the solventwas evaporated. The residue was purified further by preparative HPLC [RPShandon Hyperprep® C18 BDS (8 μm, 250 g, I.D. 5 cm); mobile phase:(0.25% NH₄CO₃ sol. in water, MeOH)]. The product fractions werecollected and concentrated under reduced pressure. Yield: 0.031 g ofcompound 179 (3%).

Example B26 a) Preparation of Compound 185

1-Iodo-2,5-pyrrolidinedione (837 mg, 3.72 mmol) was added to compound 42(1.3 g, 3.38 mmol) in DCM (50 ml) and AcOH (5 ml). The r.m. was stirredat r.t. for 5 min., then washed with an aq. NaHCO₃ sol. The organiclayer was dried (MgSO₄), filtered, concentrated in vacuo. The residuewas purified by flash chromatography over silica gel (eluent:DCM/MeOH(NH₃) from 100/0 to 97/3). The product fractions were collectedand the solvent was evaporated. Yield: 500 mg of compound 185 (29%).

b) Preparation of Compound 177

Isopropenylboronic acid pinacol ester (151 mg, 0.9 mmol) and Pd(PPh₃)₄(52 mg, 0.045 mmol) was added to a sol. of compound 185 (230 mg, 0.45mmol) in dioxane (2 ml) and an aq. NaHCO₃ sol. (2 ml), and the mixturewas stirred and heated at 150° C. for 10 min. under microwaveirradiation. The r.m. was cooled to r.t. and filtered over diatomaceousearth using EtOAc, and the filtrate was evaporated. The residue waspurified by flash column chromatography over silica gel (eluent:DCM/MeOH(NH₃) from 100/0 to 97/3). The product fractions were collectedand the solvent was evaporated. Yield: 14 mg of compound 177 (7%).

c) Preparation of Compound 175

MeOH (40 ml) was added to Pt/C 5% (50 mg) under N₂ atmosphere.Subsequently, compound 177 (150 mg, 0.35 mmol) was added. The r.m. wasstirred at 25° C. under H₂ atmosphere until 1 eq of H₂ was absorbed. Thecatalyst was filtered off over diatomaceous earth and the filtrate wasevaporated. The residue was triturated with DIPE. Yield: 70 mg of crudecompound 175 (46%).

Example B27 a) Preparation of Compound 156

A 3 M CH₃MgBr sol. in Et₂O was added to a sol. of compound 151 (preparedfrom intermediate 2 and intermediate 111 according to example B3, 105mg, 0.26 mmol) in THF (20 ml) at 0° C. Th r.m. was stirred at r.t.overnight, and then quenched with a sat. aq. NH₄Cl sol. Water was added,and the mixture was extracted with DCM. The organic layer was dried(MgSO₄), filtered, concentrated in vacuo. The residue was purified byflash chromatography over silica gel (eluent: DCM/MeOH from 100/0 to95/5). The product fractions were collected and the solvent wasevaporated. The residue was dissolved in DIPE/CH₃CN, and a 6 N HCl sol.in 2-propanol was added. The resulting precipitate was collected byfiltration and dried. Yield: 3.2 mg of compound 156 as HCl salt (3%).

b) Preparation of Compound 162

A solution of NaOH (2 g, 50 mmol) in H₂O (40 ml) was added to a sol. ofcompound 151 (0.4 g, 1 mmol) in dioxane (40 ml). The r.m. was stirred atreflux for 3 h, and was then cooled to r.t. and neutralized to pH 7 withaq. conc. HCl. The resulting precipitate was collected by filtration anddried. Part of the residue (213 mg, 0.51 mmol) was dissolved in DCM (13ml), and oxalylchloride (0.13 ml, 1.52 mmol) and DMF (0.2 ml, 2.58 mmol)were subsequently added. The r.m. was stirred at r.t. overnight, thenpoured into MeOH (20 ml) and stirred at r.t. for 1 h. The mixture waspartitioned between DCM and an aq. sat. NaHCO₃ sol. The organic layerwas dried (MgSO₄), filtered, concentrated in vacuo. The residue waspurified by flash chromatography over silica gel (eluent: DCM/MeOH from100/0 to 95/5). The product fractions were collected and the solvent wasevaporated. The residue was triturated with DIPE. Yield: 58 mg ofcompound 162 (20% yield over the 2 steps).

Compounds 1 to 202 in tables 1, 2, 3, 4 and 5 list the compounds thatwere prepared by analogy to one of the above Examples. In case no saltform is indicated, the compound was obtained as a free base. ‘Pr.’refers to the Example number according to which protocol the compoundwas synthesized. ‘Co. No.’ means compound number. ‘Bx’ refers to thegeneral Experimental Procedure 1 wherein sodium tert-butoxide, toluene,BINAP and Pd(OAc)₂ were used.

In order to obtain the HCl salt forms of the compounds, typicalprocedures known to those skilled in the art can be used. In a typicalprocedure, for example, the crude residue (free base) was dissolved inDIPE or Et₂O and subsequently, a 6 N HCl solution in 2-propanol or a 1 NHCl solution in Et₂O was added dropwise. The mixture was stirred for 10minutes and the product was filtered off. The HCl salt was dried invacuo.

TABLE 1

Co. No. Pr. Het¹ A¹ A² Y¹ R^(4b) R^(6b) R⁷ salt form  13 B13

COCH₃ CH CH H

CH₃  9 B9 

COCH₃ CH CH H

CH₃  19 B3 

CH CH CH H

CH(CH₃)₂ •2 HCl  11 B11

COCH₃ CH CH H

CH₃  20 Bx 

COCH₃ CH CH H

CH₃  21 B3 

CH CH CH H

CH(CH₃)₂  22 B3 

COCH₃ CH CH H

CH₃  23 B3 

CH CH N H

CH₃  15 B15

CH N CH H

CH(CH₃)₂  12 B12

COCH₃ CH CH H

CH₃  16 B16

COCH₃ CH CH H

CH₃  24 B3 

COCH₃ CH CH H

CH₃  14 B14

COCH₃ CH N H

CH₃  25 B3 

COCH₃ CH CH H

CH(CH₃)₂ •2 HCl  26 B3 

CH CH N H

CH(CH₃)₂  27 B3 

COCH₃ CH N H

CH(CH₃)₂  18 B18

N CH CH H

CH(CH₃)₂  28 B3 

CF CH CH H

CH(CH₃)₂  17 B17

CF CH N H

CH₃  29 B3 

N CH CH H

CH₃  10 B10

CH N CH H

CH₃  30 B3 

COCH₃ CH CH CF₃

CH₃  31 B3 

COCH₃ CH N H

CH₃  32 Bx 

CH N CH H

CH₃  33 Bx 

CH N CH H

CH₃  34 B3 

N CH CH H

C(CH₃)₃  35 B3

N CH CH H

CH₃  36 B3 

COCH₃ CH CH H

CH₃  37 B3 

COCH₃ CH CH H CH₃

 53 B3 

CH CH N H

CH₃  54 B3 

COCH₃ CH N H

CH₃  55 B3 

CF CH N H

CH₃  56 B3 

CH CH CH F

CH₃  58 B3 

CH CH N CH₃

CH₃  59 B3 

COCH₃ CH N CH₃

CH₃  61 B3 

N CH CH H

CH₃  62 B3 

COCH₃ CH CH H

CH₃  63 B3 

COCH₃ CH CH H

CH₃  64 B3 

COCH₃ CH CH H

C₂H₅  65 B3 

CF CH CH H

•HCl  66 B3 

CF CH N H

CH₃  67 B18

CH CH CH H

CH₃  68 B18

COCH₃ N CH H

CH₃  69 B18

COCH₃ N CH H

 70 B18

N CH CH H

CH₃ •2HCl  71 B18

CH N CH H

CH₃  72 B18

CH CH CH H

CH₃  73 B18

COCH₃ CH CH H

CH₃  74 B18

COCH₃ CH CH H

CH₃  75 B18

COCH₃ CH CH H

CH₃  76 B18

N CH CH H

CH₃  77 B18

COCH₃ CH CH H

 78 B17

COCH₃ CH N H

CH₃  79 B18

N CH CH F

CH₃  80 B3 

COCH₃ CH CH H

•HCl  81 B18

CH CH CH H

 82 B18

N CH CH H

 83 B18

CH CH CH H

CH₃  84 B18

CH CH CH H

 85 B17

N CH N H

CH₃  86 B18

N CH CH CN

CH₃  87 B18

N CH CH H

CH₃  88 B18

N CH CH H

CH₃ •2HCl •H₂O  89 B18

N CH CH F

•1.7HCl •1.6H₂O.  90 B18

CH CH CH F

CH₃  91 B17

COCH₃ CH N H

CH₃  92 B17

COCH₃ CH N CH₃

CH₃  93 B18

COCH₃ CH CH H

 94 B17

COCH₃ CH N

CH₃  95 B18

COCH₃ CH CH OCH₃

CH₃  96 B18

CH CH CH H

CH₃  97 B17

COCH₃ CH N CH₃

CH₃  98 B17

CH CH N CH₃

CH₃  99 B18

CH CH CH CF₃

CH₃ 100 B18

CH CH CH CF₃

CH₃ 101 B18

N CH CH CF₃

CH₃ 102 B17

COCH₃ CH N CH₃

CH₃ 103 B18

N CH CH CN

CH₃ 104 B18

COCH₃ CH CH F

CH₃ 105 B18

N CH CH F

CH₃ 106 B18

N CH CH F

CH₃ 107 B18

N CH CH F

CH₃ 108 B18

COCH₃ CH CH F

CH₃ •2HCl •H₂O 109 B17

CF CH N H

CH₃ 110 B18

N CH CH CN

CH₃ 111 B17

N CH N CH₃

CH₃ 112 B18

N CH CH H

•1.5HCl •2H₂O 113 B17

COCH₃ CH N CH₃

CH₃ 114 B18

N CH CH F

CH₃ 115 B18

N CH CH H

116 B18

N CH CH H

•2HCl 117 B17

N CH N H

CH₃ 118 B18

N CH CH H

•2HCl 119 B18

N CH CH F

CH₃ 120 B23

COCH₃ CH CH CH₂NH₂

CH₃ 121 B17

COCH₃ CH N CH₃

CH₃ 122 B18

COCH₃ CH CH CN

CH₃ 123 B18

COCH₃ CH CH CN

CH₃ 124 B18

CH CH CH H

CH₃ 125 B17

COCH₃ CH N CH₃

CH₃ 126 B18

COCH₃ CH CH CF₃

CH₃ 127 B21

COCH₃ CH N CH₃

CH₃ 128 B21

COCH₃ CH CH H

129 B21

COCH₃ N CH H

CH₃ 130 B21

COCH₃ N CH H

131 B21

CH CH CH H

132 B21

CH CH N CH₃

CH₃ 133 B21

CF CH CH H

CH₃ 134 B17

N N N CH₃

CH₃ 135 B18

N N CH H

CH₃ 136 B21

CF CH N CH₃

CH₃ 137 B21

CF CH CH H

138 B21

CH CH CH H

CH₃ 139 B21

COCH₃ CH CH H

CH₃ 140 B21

CH CH CH H

184 B21

CH CH CH H

CH₃

TABLE 2

Co. no. Pr. Het¹ A¹ Z¹ R^(4a) R⁵ R^(6a) salt form  6 B6 

COCH₃ CH H CH₃

 38 A1 

COCH₃ CH H H

 39 B3 

CH CH H H

•2 HCl  2 B2 

COCH₃ CH H CH₃

 40 B3 

CH CH H H

 41 B3 

CF CH H H

 42 B3 

CH CH H H

 3 B3 

COCH₃ CH H H

 1 B1 

COCH₃ CH H H

 43 B3 

CH CH H H

 44 B3 

N CH H H

 45 B3 

N CH H H

 46 B3 

CH CH H H

 47 B3 

CH CH H H

 48 B3 

COCH₃ CH H H

•HCl  49 Bx 

CH CH H CH₃

 50 B3 

CH CH H H

 51 B3 

N CH H H

 8 B8 

COCH₃ CH H CH₃

 7 B7 

COCH₃ CH H H

 4 B4 

COCH₃ CH H CH₃

 57 B24

CH N H H

 60 B25

CH N Br H

 52 B3 

COCH₃ CH H H

 5 B5 

COCH₃ CH H CH₃

141 B3 

COCH₃ CH CF₃ H CH₃ •2 HCl 142 B3 

COCH₃ CH CF₃ CH₃ CH₃ 143 B3 

COCH₃ CH CF₃ H (C═O)N(CH₃)₂ 144 B3 

COCH₃ CH H CH₃ CH₃ 145 B3 

COCH₃ CH CN H CH₃ 146 B3 

COCH₃ CH CN H

147 B3 

COCH₃ CH F H

•HCl •H₂O 148 B3 

COCH₃ CH CF₃ H

149 B23

COCH₃ CH CH₃ H

•HCl 150 B23

COCH₃ CH CH₂NH₂ H

151 B3 

COCH₃ CH CN H

202 B3 

COCH₃ CH CN H

•2 HCl 152 B3 

CH CH H CH₃

153 B3 

COCH₃ N

H CH₃ 154 B3 

N CH H H

155 B3 

COCH₃ CH H H

•2HCl 156  B27a

COCH₃ CH

H

•HCl 157 B3 

COCH₃ CH F H

•HCl 158 B3 

COCH₃ N H H CH₃ 159 B3 

COCH₃ CH Cl H

•2HCl 160 B3 

N CH H H

161 B3 

N CH H OCH₃

162  B27b

COCH₃ CH

H

163 B3 

COCH₃ CH F H

164 B3 

N CH H H

•HCl •0.45H₂O 165 B22

COCH₃ CH CF₃ H (C═O)CH₃ 166 B3 

CH CH H H

167 B3 

N CH H CH₃

168 B3 

COCH₃ CH H CH₂OCH₃

169 B19

COCH₃ CH H (CH₂)₃OCH₃

170 B3 

COCH₃ N CF₃ H CH₃ 171 B3 

N CH F H

1.2HCl 172 B3 

N CH H H CH₃ 173 B3 

N CH H CH₃

174 B19

COCH₃ CH H (CH₂)₂OCH₃

175  B26c

CH CH H

176 B3 

CH CH F H

177  B26b

CH CH H

178 B3 

CH CH F H

•2 HCl 179 B25

CH N Br H CH₃ 180 B3 

CH CH H CH₃ CH₃ 181 B3 

CF CH CF₃ H (C═O)N(CH₃)₂ 182 B21

CF CH H CH₃

183 B21

CH CH H CH₃

185  B26a

CH CH H I

201 B21

COCH₃ CH H CH₃

TABLE 3

Co. No. Pr. Het¹ A¹ A² A⁴ R^(4b) Y³ R^(6b) R⁷ 187 B17

CF CH CH H N

CH₃ 188 B20

CH N N H CH

CH₃ 189 B18

COCH₃ CH CH CN N

CH₃ 190  B26c

COCH₃ CH CH

N

CH₃ 191 B17

N CH CH

N

CH₃ 192 B17

COCH₃ CH CH

N

CH₃ 193 B17

COCH₃ CH CH CH₃ N

CH₃

TABLE 4

Co. no. Pr. Het¹ A¹ A² R^(4a) Z³ R⁵ R^(6a) 194 B21

COCH₃ N H CH CH₃

195 B3

COCH₃ CH CF₃ N H CH₃ 196 B3

COCH₃ CH CF₃ N H CH₃ 197  B24

N CH H N H

198 B3

N CH Cl N H

TABLE 5

Co. No. Pr. Het¹ A¹ A² R^(6b) R⁷ 199 B18

COCH₃ CH

CH₃ 200 B18

N CH

CH₃ 186 B18

COCH₃ CH

CH₃

Analytical Part LCMS General Procedure a

The LC measurement was performed using an Acquity UPLC (Waters) systemcomprising a binary pump, a sample organizer, a column heater (set at55° C.), a diode-array detector (DAD) and a column as specified in therespective methods below. Flow from the column was split to a MSspectrometer. The MS detector was configured with an electrosprayionization source. Mass spectra were acquired by scanning from 100 to1000 in 0.18 seconds using a dwell time of 0.02 seconds. The capillaryneedle voltage was 3.5 kV and the source temperature was maintained at140° C. Nitrogen was used as the nebulizer gas. Data acquisition wasperformed with a Waters-Micromass MassLynx-Openlynx data system.

General Procedure B

The HPLC measurement was performed using an Agilent 1100 series liquidchromatography system comprising a binary pump with degasser, anautosampler, a column oven, a UV detector and a column as specified inthe respective methods below. Flow from the column was split to a MSspectrometer. The MS detector was configured with an electrosprayionization source. The capillary voltage was 3 kV, the quadrupoletemperature was maintained at 100° C. and the desolvation temperaturewas 300° C. Nitrogen was used as the nebulizer gas. Data acquisition wasperformed with an Agilent Chemstation data system.

General Procedure C

The HPLC measurement was performed using an Alliance HT 2790 (Waters)system comprising a quaternary pump with degasser, an autosampler, acolumn oven (set at 40° C., unless otherwise indicated), a diode-arraydetector (DAD) and a column as specified in the respective methodsbelow. Flow from the column was split to a MS spectrometer. The MSdetector was configured with an electrospray ionization source. Massspectra were acquired by scanning from 100 to 1000 in 1 second using adwell time of 0.1 second. The capillary needle voltage was 3 kV and thesource temperature was maintained at 140° C. Nitrogen was used as thenebulizer gas. Data acquisition was performed with a Waters-MicromassMassLynx-Openlynx data system.

LCMS Method 1

In addition to general procedure A: Reversed phase UPLC (UltraPerformance Liquid Chromatography) was carried out on a bridgedethylsiloxane/silica hybrid (BEH) C18 column (1.7 μm, 2.1×50 mm; WatersAcquity) with a flow rate of 0.8 ml/min. Two mobile phases (25 mM NH₄OAcin H₂O/CH₃CN 95/5; mobile phase B: CH₃CN) were used to run a gradientcondition from 95% A and 5% B to 5% A and 95% B in 1.3 minutes (min) andhold for 0.3 min. An injection volume of 0.5 μl was used. Cone voltagewas 10 V for positive ionization mode and 20 V for negative ionizationmode.

LCMS Method 2

In addition to general procedure A: Reversed phase UPLC was carried outon a BEH C18 column (1.7 μm, 2.1×50 mm; Waters Acquity) with a flow rateof 0.8 ml/min. Two mobile phases (mobile phase A: 0.1% formic acid inH₂O/MeOH 95/5; mobile phase B: MeOH) were used to run a gradientcondition from 95% A and 5% B to 5% A and 95% B in 1.3 min and hold for0.2 min. An injection volume of 0.5 μl was used. Cone voltage was 10 Vfor positive and 20 V for negative ionization mode.

LCMS Method 3

In addition to general procedure B: Reversed phase HPLC was carried outon a YMC-Pack ODS-AQ C18 column (4.6×50 mm) with a flow rate of 2.6ml/min. A gradient run was used from 95% water and 5% CH₃CN to 95% CH₃CNin 4.80 min and was hold for 1.20 min. Mass spectra were acquired byscanning from 100 to 1400. Injection volume was 10 μl. Columntemperature was 35° C.

LCMS Method 4

In addition to general procedure C: Column heater was set at 60° C.Reversed phase HPLC was carried out on an Xterra MS C18 column (3.5 μm,4.6×100 mm) with a flow rate of 1.6 ml/min. Three mobile phases (mobilephase A: 95% 25 mM NH₄OAc+5% CH₃CN; mobile phase B: CH₃CN; mobile phaseC: MeOH) were employed to run a gradient condition from 100% A to 50% Band 50% C in 6.5 minutes, to 100% B in 0.5 min and hold these conditionsfor 1 min and reequilibrate with 100% A for 1.5 minutes. An injectionvolume of 10 μl was used. Cone voltage was 10 V for positive ionizationmode and 20 V for negative ionization mode.

LCMS Method 5

In addition to general procedure C: Column heater was set at 45° C.Reversed phase HPLC was carried out on an Atlantis C18 column (3.5 μm,4.6×100 mm) with a flow rate of 1.6 ml/min. Two mobile phases (mobilephase A: 70% MeOH+30% H₂O; mobile phase B: 0.1% formic acid in H₂O/MeOH95/5) were employed to run a gradient condition from 100% B to 5% B+95%A in 9 min and hold these conditions for 3 min. An injection volume of10 μl was used. Cone voltage was 10 V for positive ionization mode and20 V for negative ionization mode.

LCMS Method 6

In addition to general procedure C: Reversed phase HPLC was carried outon an Xterra MS C18 column (3.5 μm, 4.6×100 mm) with a flow rate of 1.6ml/min. Three mobile phases (mobile phase A: 95% 25 mM NH₄OAc+5% CH₃CN;mobile phase B: CH₃CN; mobile phase C: MeOH) were employed to run agradient condition from 100% A to 1% A, 49% B and 50% C in 6.5 min, to1% A and 99% B in 1 min and hold these conditions for 1 min andreequilibrate with 100% A for 1.5 min. An injection volume of 10 μl wasused. Cone voltage was 10 V for positive and 20 V for negativeionization mode.

LCMS Method 7

In addition to general procedure A: Reversed phase UPLC was carried outon a bridged BEH C18 column (1.7 μm, 2.1×50 mm; Waters Acquity) with aflow rate of 0.8 ml/min. Two mobile phases (25 mM NH₄OAc in H₂O/CH₃CN95/5; mobile phase B: CH₃CN) were used to run a gradient condition from95% A and 5% B to 5% A and 95% B in 1.3 min and hold for 0.3 min. Aninjection volume of 0.5 μl was used. Cone voltage was 30 V for positiveand 30 V for negative ionization mode.

Melting Points

For a number of compounds, melting points (m.p.) were determined with aDSC823e (Mettler-Toledo). Melting points were measured with atemperature gradient of 30° C./minute. Maximum temperature was 400° C.Values are peak values.

The results of the analytical measurements are shown in table 6.

TABLE 6 Retention time (R_(t)) in min., [M + H]⁺ peak (protonatedmolecule), LCMS method and m.p. (melting point in ° C.). (n.d. means notdetermined) Co. LCMS m.p. No. Rt [M + H]⁺ Method (° C.) 1 1.15 415 1163.2 2 1.18 441 1 n.d. 3 1.41 415 2 219.1 4 8.42 457 5 n.d. 5 1.26 4711 n.d. 6 1.16 454 1 n.d. 7 6.09 429 4 n.d. 8 1.32 425 2 n.d. 9 1.33 4282 n.d. 10 5.72 400 4 195.4 11 1.08 431 1 n.d. 12 1.13 429 1 n.d. 13 1.27428 2 157.6 14 7.02 430 5 204.9 15 1.23 428 1 n.d. 16 1.15 429 1 189.017 1.13 418 1 n.d. 18 1.12 428 1 133.4 19 1.54 427 2 n.d. 20 3.11 441 3n.d. 21 n.d. n.d. — n.d. 22 1.53 511 2 n.d. 23 1.06 400 1 184.8 24 6.00443 4 174.1 25 1.27 457 1 n.d. 26 1.22 428 1 n.d. 27 1.24 458 1 n.d. 281.46 445 2 n.d. 29 1.00 400 1 n.d. 30 1.31 497 1 201.9 31 1.12 448 1210.1 32 2.95 416 3 n.d. 33 2.90 446 3 n.d. 34 1.22 442 1 n.d. 35 1.07400 1 n.d. 36 1.1  430 1 n.d. 37 1.01 409 1 n.d. 38 1.16 401 1 n.d. 391.23 381 1 n.d. 40 1.20 411 1 n.d. 41 n.d. n.d. — n.d. 42 1.42 385 2181.8 43 1.15 399 1 n.d. 44 1.15 400 1 n.d. 45 1.21 400 1 n.d. 46 8.45399 5 135.3 47 9.55 399 5 n.d. 48 1.35 429 2 n.d. 49 6.78 415 4 213.0 509.61 449 5 125.5 51 1.28 450 1 n.d. 52 1.27 427 1 n.d. 53 1.09 418 1171.4 54 1.08 448 1 156.8 55 1.14 436 1 204.8 56 n.d. n.d. — n.d. 571.43 400 2 n.d. 58 1.15 414 1 230.2 59 1.18 444 1 250.8 60 1.53 478 2n.d. 61 1.07 412 1 145.1 62 3.73 475 3 n.d. 63 3.26 441 3 n.d. 64 2.64403 3 n.d. 65 6.63 445 6 n.d. 66 1.01 378 7 172.5 67 1.09 398 7 195.9 681.15 429 7 168.9 69 6.69 457 6 192.8 70 0.96 399 7 n.d. 71 1.06 399 7113.5 72 1.13 398 7 146.3 73 6.27 429 6 184.1 74 5.87 429 6 153.3 750.99 429 7 224.7 76 1.07 416 7 147.3 77 1.31 473 7 n.d. 78 1.15 464 7122.5 79 1.15 448 7 n.d. 80 1.25 471 7 n.d. 81 1.28 441 7 n.d. 82 1.20442 7 n.d. 83 1.17 413 7 n.d. 84 6.45 457 6 172.5 85 0.97 417 7 n.d. 860.97 425 7 253.6 87 1.14 444 7 n.d. 88 1.16 456 7 n.d. 89 1.15 446 7n.d. 90 1.12 392 7 n.d. 91 1.04 432 7 190.7 92 0.99 434 7 n.d. 93 1.11447 7 191.6 94 1.27 470 7 n.d. 95 1.37 459 2 n.d. 96 1.07 377 7 n.d. 971.19 456 7 183.0 98 1.17 426 7 158.8 99 1.15 454 7 190.1 100 1.12 457 7204.6 101 1.13 468 7 173.6 102 1.30 484 7 n.d. 103 1.27 437 2 n.d. 1041.14 422 7 n.d. 105 1.05 430 7 n.d. 106 1.03 418 7 190.2 107 1.06 434 7118.3 108 6.83 438 6 n.d. 109 1.14 430 7 190.4 110 1.03 425 7 230.6 1111.13 431 7 220.2 112 1.25 444 7 n.d. 113 1.19 460 7 139.5 114 1.12 434 7n.d. 115 1.54 450 2 n.d. 116 9.50 450 5 n.d. 117 1.03 417 7 189.2 1181.17 428 7 n.d. 119 1.39 418 2 179.6 120 0.79 458 7 n.d. 121 1.18 456 7176.2 122 1.10 466 7 n.d. 123 1.37 454 2 208.9 124 1.15 399 7 n.d. 1251.16 444 7 211.0 126 1.20 499 7 180.2 127 1.30 454 7 201.1 128 1.38 4677 n.d. 129 1.37 440 7 n.d. 130 1.45 468 7 n.d. 131 1.13 437 2 n.d. 1320.90 424 2 240.0 133 1.20 427 7 n.d. 134 n.d. n.d. n.d. 258.8 135 0.99411 7 220.0 136 1.24 442 7 230.5 137 1.31 455 7 n.d. 138 6.58 409 6168.9 139 1.17 439 7 163.2 140 1.31 451 7 n.d. 141 6.20 403 6 n.d. 1421.17 417 7 n.d. 143 n.d. n.d. — 201.8 144 0.99 349 7 122.0 145 0.93 3607 186.6 146 1.21 454 7 195.2 147 1.27 447 7 n.d. 148 0.91 202 2 n.d. 1496.68 443 6 n.d. 150 0.93 458 7 n.d. 151 6.27 402 6 n.d. 152 1.21 411 7123.7 153 1.44 376 2 n.d. 154 5.20 376 6 n.d. 155 5.63 405 6 201.2 1566.09 419 6 n.d. 157 6.45 395 6 n.d. 158 0.92 336 7 263.0 159 1.09 439 7n.d. 160 0.82 332 2 n.d. 161 n.d. n.d. n.d. 176.9 162 n.d. n.d. n.d.157.1 163 1.01 423 7 155.2 164 5.41 390 6 n.d. 165 n.d. n.d. — 183.6 1660.96 331 2 n.d. 167 n.d. n.d. n.d. n.d. 168 1.22 459 7 170.8 169 1.27537 7 n.d. 170 1.42 404 2 239.8 171 1.12 418 7 n.d. 172 0.77 306 7 n.d.173 6.17 415 6 n.d. 174 1.24 473 7 163.5 175 1.33 427 7 157.2 176 1.28417 7 n.d. 177 1.36 425 7 n.d. 178 6.64 365 6 n.d. 179 1.39 385 2 200.1180 1.15 347 7 n.d. 181 1.02 448 7 n.d. 182 1.30 443 7 166.2 183 1.43425 7 210.8 184 1.14 395 7 230.5 185 1.38 511 7 n.d. 186 0.93 430 7254.2 187 1.05 418 7 179.4 188 1.23 401 2 n.d. 189 1.14 455 7 276.3 1901.28 472 7 191.7 191 1.13 443 7 n.d. 192 1.28 470 7 n.d. 193 1.34 444 2n.d. 194 1.44 456 7 175.2 195 1.16 404 7 168.9 196 1.12 404 7 171.5 1971.14 401 7 n.d. 198 1.30 436 7 230.1 199 0.91 430 7 n.d. 200 0.82 401 7217.5 201 6.92 455 6 n.d. 202 6.26 402 6 n.d. mailto:30.300@10/50ml%20N2

NMR

For a number of compounds, ¹H NMR spectra were recorded on a BrukerDPX-360, on a Bruker DPX-400, or on a Bruker Avance 600 spectrometerwith standard pulse sequences, operating at 360, 400 and 600 MHzrespectively, using CHLOROFORM-d or DMSO-d₆ as solvents. Chemical shifts(δ) are reported in parts per million (ppm) relative totetramethylsilane (TMS), which was used as internal standard.

Compound 1: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 2.11 (s, 3H), 3.80 (s, 3H),6.81 (t, J=7.1 Hz, 1H), 7.03-7.13 (m, 2H), 7.18 (d, J=2.0 Hz, 1H), 7.28(d, J=8.4 Hz, 1H), 7.30 (t, J=8.7 Hz, 2H), 8.02-8.11 (m, 3H), 8.27 (s,1H), 8.39 (s, 1H), 8.52 (s, 1H).

Compound 2: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 2.11 (s, 3H), 2.65 (s, 3H),3.80 (s, 3H), 3.83 (s, 3H), 6.88 (t, J=7.1 Hz, 1H), 6.94 (dt, J=5.9, 2.9Hz, 1H), 7.05-7.11 (m, 2H), 7.17 (d, J=2.0 Hz, 1H), 7.27 (d, J=8.3 Hz,1H), 7.37-7.43 (m, 3H), 7.90 (d, J=6.8 Hz, 1H), 8.26 (s, 1H), 8.53 (s,1H).

Compound 3: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 2.46 (s, 3H), 3.92 (s, 3H),6.82 (t, J=7.1 Hz, 1H), 7.06 (d, J=7.5 Hz, 1H), 7.09 (dd, J=8.5, 2.0 Hz,1H), 7.19 (d, J=2.0 Hz, 1H), 7.24 (s, 1H), 7.30 (t, J=8.8 Hz, 2H), 7.56(d, J=8.4 Hz, 1H), 8.04-8.09 (m, 3H), 8.39 (s, 1H), 8.48 (s, 1H).

Compound 4: ¹H NMR (400 MHz, DMSO-d₆) δ ppm 2.64 (s, 3H), 2.65 (s, 3H),3.83 (s, 3H), 3.89 (s, 3H), 6.87 (t, J=7.1 Hz, 1H), 6.94 (dt, J=6.4, 2.8Hz, 1H), 7.04-7.09 (m, 2H), 7.18 (d, J=2.2 Hz, 1H), 7.36-7.44 (m, 3H),7.60 (d, J=8.4 Hz, 1H), 7.88 (d, J=6.7 Hz, 1H), 7.97 (s, 1H), 8.45 (s,1H).

Compound 5: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 2.22 (s, 3H), 2.60 (s, 3H),2.65 (s, 3H), 3.77 (s, 3H), 3.83 (s, 3H), 6.87 (t, J=7.1 Hz, 1H), 6.94(dt, J=5.9, 3.0 Hz, 1H), 7.03-7.10 (m, 2H), 7.16 (d, J=2.0 Hz, 1H), 7.20(d, J=8.3 Hz, 1H), 7.37-7.43 (m, 3H), 7.88 (d, J=6.8 Hz, 1H), 8.46 (s,1H).

Compound 6: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 2.14 (s, 3H), 2.64 (s, 3H),3.77 (s, 3H), 3.78 (s, 3H), 3.83 (s, 3H), 6.85 (t, J=7.1 Hz, 1H), 6.94(dt, J=6.0, 2.9 Hz, 1H), 7.00 (d, J=7.5 Hz, 1H), 7.00-7.04 (m, 1H), 7.12(d, J=2.1 Hz, 1H), 7.16 (d, J=8.2 Hz, 1H), 7.38-7.42 (m, 3H), 7.65 (s,1H), 7.83 (d, J=6.7 Hz, 1H), 8.25 (s, 1H).

Compound 7: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 2.04 (s, 3H) 2.38 (s, 3H)3.80 (s, 3H) 6.81 (t, J=7.32Hz, 1H) 6.99-7.11 (m, 2H) 7.16 (d, J=1.83Hz, 1H) 7.24 (d, J=8.42 Hz, 1H) 7.30 (t, J=8.78 Hz, 2H) 7.99-8.15 (m,3H) 8.39 (s, 1H) 8.48 (s, 1H).

Compound 8: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 2.04 (s, 3H), 2.38 (s, 3H),2.65 (s, 3H), 3.79 (s, 3H), 6.88 (t, J=7.1 Hz, 1H), 7.04-7.11 (m, 2H),7.16 (d, J=2.0 Hz, 1H), 7.24 (d, J=8.3 Hz, 1H), 7.36 (t, J=7.4 Hz, 1H),7.49 (t, J=7.5 Hz, 2H), 7.86 (d, J=7.7 Hz, 2H), 7.89 (d, J=6.7 Hz, 1H),8.48 (s, 1H).

Compound 9: 1H NMR (360 MHz, CHLOROFORM-d) δ ppm 3.76 (s, 3H), 3.81 (s,3H), 3.85 (s, 3H), 6.24 (d, J=1.9 Hz, 1H), 6.92 (d, J=2.1 Hz, 1H),6.94-7.01 (m, 2H), 7.14 (s, 1H), 7.17 (d, J=8.2 Hz, 1H), 7.22-7.32 (m,4H), 7.52 (d, J=1.9 Hz, 1H), 7.75 (dd, J=8.5, 5.4 Hz, 2H).

Compound 10: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 2.35 (s, 3H), 3.86 (s, 3H),7.21 (dd, J=8.1, 1.4 Hz, 1H), 7.25 (t, J=7.8 Hz, 1H), 7.39 (d, J=8.8 Hz,1H), 7.44 (t, J=8.8 Hz, 2H), 7.81 (dd, J=8.8, 2.5 Hz, 1H), 7.94 (dd,J=8.6, 5.6 Hz, 2H), 8.28 (dd, J=7.5, 1.3 Hz, 1H), 8.32 (s, 1H), 8.47 (d,J=2.5 Hz, 1H), 9.22 (s, 1H).

Compound 11: ¹H NMR (360 MHz, CHLOROFORM-d) δ ppm 2.24 (s, 3H),2.76-2.90 (m, 2H), 3.10-3.16 (m, 2H), 3.76 (s, 3H), 3.85 (s, 3H),6.87-6.91 (m, 2H), 6.97 (dd, J=8.3, 2.1 Hz, 1H), 6.96 (s, 1H), 7.20 (t,J=7.7 Hz, 1H), 7.24 (dd, J=7.9, 1.5 Hz, 1H), 7.85 (s, 1H).

Compound 12: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 2.10 (s, 3H), 3.75 (s, 3H),3.86 (s, 3H), 6.95 (dd, J=8.4, 2.0 Hz, 1H), 7.06 (d, J=2.0 Hz, 1H),7.15-7.26 (m, 4H), 7.43 (t, J=8.7 Hz, 2H), 7.92 (dd, J=8.4, 5.4 Hz, 2H),8.23 (s, 1H), 8.53 (s, 1H).

Compound 13: ¹H NMR (360 MHz, CHLOROFORM-d) δ ppm 3.84 (s, 3H), 3.89 (s,3H), 3.94 (s, 3H), 6.89-6.93 (m, 2H), 6.97 (dd, J=8.2, 2.1 Hz, 1H), 7.07(s, 1H), 7.21-7.28 (m, 4H), 7.45 (d, J=8.2 Hz, 1H), 7.75 (dd, J=8.6, 5.3Hz, 2H), 7.79 (s, 1H), 7.83 (s, 1H).

Compound 14: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 2.46 (s, 3H), 3.86 (s, 3H),3.92 (s, 3H), 7.18 (d, J=5.8 Hz, 1H), 7.23 (s, 1H), 7.46 (t, J=8.8 Hz,2H), 7.53 (d, J=9.0 Hz, 1H), 7.93-7.99 (m, 4H), 8.03 (d, J=5.8 Hz, 1H),9.26 (s, 1H).

Compound 15: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 1.59 (d, J=6.9 Hz, 6H),2.47 (s, 3H), 4.58-4.69 (m, 1H), 7.20 (t, J=8.1 Hz, 1H), 7.35 (d, J=8.8Hz, 1H), 7.38 (d, J=7.9 Hz, 1H), 7.39 (s, 1H), 7.43 (t, J=8.8 Hz, 2H),7.74 (dd, J=8.6, 5.5 Hz, 2H), 7.83 (dd, J=8.8, 2.5 Hz, 1H), 8.24 (d,J=8.0 Hz, 1H), 8.52 (d, J=2.4 Hz, 1H), 9.14 (s, 1H).

Compound 16: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 2.45 (s, 3H), 3.86 (s, 3H),3.86 (s, 3H), 6.97 (dd, J=8.5, 2.0 Hz, 1H), 7.07 (d, J=2.0 Hz, 1H),7.14-7.25 (m, 4H), 7.43 (t, J=8.8 Hz, 2H), 7.49 (d, J=8.5 Hz, 1H), 7.92(dd, J=8.6, 5.5 Hz, 2H), 8.50 (s, 1H).

Compound 18: ¹H NMR (360 MHz, CHLOROFORM-d) δ ppm 1.66 (d, J=6.95 Hz,6H) 2.56 (s, 3H) 4.73 (spt, J=6.92, 6.77 Hz, 1H) 7.13 (s, 1H) 7.15-7.22(m, 3H) 7.22-7.28 (m, 2H) 7.40 (s, 1H) 7.54 (d, J=8.78 Hz, 1H) 7.62 (dd,J=8.60, 5.31 Hz, 2H) 7.69 (dd, J=8.60, 2.74 Hz, 1H) 8.61 (d, J=2.56 Hz,1H).

Compound 25: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 1.68 (d, J=6.95 Hz, 6H)2.47 (s, 3H) 3.90 (s, 3H) 4.71-4.82 (m, 1H) 6.93 (dd, J=8.42, 1.83 Hz,1H) 6.98 (s, 1H) 7.44-7.52 (m, 2H) 7.57 (d, J=8.42 Hz, 1H) 7.61 (t,J=8.96 Hz, 2H) 7.67 (t, 1H) 7.95 (dd, J=8.60, 5.31 Hz, 2H) 9.17 (br. s.,1H).

Compound 38: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 3.93 (s, 3H) 6.82 (t,J=7.32 Hz, 1H) 7.08 (d, J=7.68 Hz, 1H) 7.11 (dd, J=8.42, 2.20 Hz, 1H)7.21 (d, J=2.20 Hz, 1H) 7.30 (t, J=8.78 Hz, 2H) 7.40 (s, 1H) 7.63 (d,J=8.42 Hz, 1H) 8.01-8.09 (m, 3H) 8.36 (s, 1H) 8.40 (s, 1H) 8.54 (s, 1H).

Compound 40: ¹H NMR (360 MHz, CHLOROFORM-d) δ ppm 2.49 (s, 3H) 2.53 (s,3H) 3.88 (s, 3H) 6.72 (dd, J=7.32, 6.95 Hz, 1H) 6.85 (dd, J=8.42, 2.93Hz, 1H) 6.94 (d, J=6.95 Hz, 1H) 7.14 (s, 1H) 7.20 (d, J=8.42 Hz, 1H)7.33-7.39 (m, 3H) 7.51 (d, J=2.56 Hz, 1H) 7.60 (m, 2H) 7.69 (s, 1H) 7.71(dd, J=6.59, 0.73 Hz, 1H).

Compound 57: ¹H NMR (600 MHz, CHLOROFORM-d) δ ppm 2.53 (s, 3H), 2.53 (s,3H), 7.00-7.04 (m, 2H), 7.15 (s, 1H), 7.50 (d, J=4.6 Hz, 1H), 7.60 (d,J=4.6 Hz, 1H), 7.62 (d, J=8.7 Hz, 2H), 7.62 (s, 1H), 7.77 (dd, J=8.1,6.0 Hz, 1H), 7.94 (d, J=8.7 Hz, 2H), 8.20 (s, 1H).

Compound 60: ¹H NMR (600 MHz, CHLOROFORM-d) δ ppm 2.52 (s, 3H), 2.53 (s,3H), 6.99-7.05 (m, 2H), 7.16 (s, 1H), 7.59 (s, 1H), 7.64 (d, J=8.5 Hz,2H), 7.74 (d, J=7.2 Hz, 1H), 7.76 (s, 1H), 7.93 (d, J=8.6 Hz, 2H), 8.24(s, 1H).

Compound 89: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 1.64 (d, J=6.95 Hz, 6H)2.52 (s, 3H) 4.72 (spt, 1H) 7.18 (dd, J=11.89, 1.65 Hz, 1H) 7.52-7.64(m, 4H) 7.73 (d, J=8.78 Hz, 1H) 7.87-7.94 (m, 3H) 8.60 (d, J=2.56 Hz,1H) 9.74 (br. s., 1H).

Compound 95: ¹H NMR (360 MHz, CHLOROFORM-d) δ ppm 2.52 (s, 3H) 3.80 (s,3H) 3.89 (s, 3H) 3.94 (s, 3H) 6.39 (d, J=1.83 Hz, 1H) 6.87-6.93 (m, 2H)7.00 (dd, J=8.42, 2.20 Hz, 1H) 7.10 (s, 1H) 7.19-7.28 (m, 2H) 7.29 (s,1H) 7.66 (d, J=8.42 Hz, 1H) 7.72 (dd, J=8.60, 5.31 Hz, 2H).

Compound 97: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 2.46 (s, 3H) 2.54 (s, 3H)3.83 (s, 3H) 3.86 (s, 3H) 3.94 (s, 3H) 7.02 (s, 1H) 7.11-7.17 (m, 1H)7.22 (s, 1H) 7.40-7.46 (m, 2H) 7.46-7.54 (m, 2H) 7.77 (dd, J=8.78, 1.83Hz, 1H) 8.32 (d, J=1.83 Hz, 1H) 9.24 (s, 1H).

Compound 99: ¹H NMR (600 MHz, CHLOROFORM-d) δ ppm 2.53 (s, 3H), 2.66 (s,3H), 4.03 (s, 3H), 7.12 (br. s., 1H), 7.15 (s, 1H), 7.19 (s, 1H), 7.36(d, J=8.5 Hz, 2H), 7.36 (s, 1H), 7.62 (d, J=8.5 Hz, 2H), 8.00 (s, 1H).

Compound 101: ¹H NMR (360 MHz, CHLOROFORM-d) δ ppm 2.57 (s, 3H) 3.91 (s,3H) 7.22 (s, 1H) 7.24-7.33 (m, 2H) 7.36 (s, 1H) 7.45 (s, 1H) 7.61 (d,J=8.78 Hz, 1H) 7.71 (dd, J=8.78, 2.93 Hz, 1H) 7.77 (dd, J=8.78, 5.12 Hz,2H) 8.64 (d, J=2.56 Hz, 1H).

Compound 106: ¹H NMR (360 MHz, CHLOROFORM-d) δ ppm 2.57 (s, 3H) 3.81 (s,3H) 6.65 (dd, J=8.78, 1.83 Hz, 1H) 6.90 (dd, J=12.08, 2.20 Hz, 1H) 7.19(s, 1H) 7.25 (t, J=8.23 Hz, 2H) 7.44 (s, 1H) 7.58 (d, J=8.78 Hz, 1H)7.71-7.78 (m, 3H) 8.60 (d, J=2.56 Hz, 1H).

Compound 127: ¹H NMR (400 MHz, DMSO-d₆) δ ppm 2.49 (s, 3H) 2.54 (s, 3H)3.81 (s, 3H) 3.84 (s, 3H) 7.00 (s, 1H) 7.31 (d, J=8.48 Hz, 1H) 7.34 (dd,J=5.05, 1.41 Hz, 1H) 7.40 (s, 1H) 7.43 (t, J=8.88 Hz, 2H) 7.79 (dd,J=8.48, 2.02 Hz, 1H) 7.94 (dd, J=8.88, 5.65 Hz, 2H) 8.29 (d, J=2.02 Hz,1H) 8.39 (d, J=5.25 Hz, 1H) 9.19 (s, 1H).

Compound 129: ¹H NMR (360 MHz, CHLOROFORM-d) δ ppm 2.60 (s, 3H) 3.85 (s,3H) 4.10 (s, 3H) 6.65 (d, J=8.05 Hz, 1H) 7.02 (d, J=8.05 Hz, 1H)7.22-7.30 (m, 2H) 7.30-7.37 (m, 2H) 7.39 (s, 1H) 7.62 (d, J=8.42 Hz, 1H)7.76 (dd, J=8.60, 5.31 Hz, 2H) 7.91 (s, 1H) 8.25 (d, J=7.68 Hz, 1H) 8.48(d, J=5.12 Hz, 1H).

Compound 139: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 2.48 (s, 3H) 3.76 (s, 3H)3.86 (s, 3H) 6.98 (dd, J=8.42, 2.20 Hz, 1H) 7.08 (d, J=2.20 Hz, 1H)7.12-7.34 (m, 5H) 7.37 (s, 1H) 7.44 (t, J=8.78 Hz, 2H) 7.93 (dd, J=8.78,5.49 Hz, 2H) 8.38 (d, J=5.12 Hz, 1H) 8.50 (s, 1H).

Compound 157: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 0.96 (d, J=6.59 Hz, 6H)2.12 (s, 3H) 2.13-2.22 (m, 1H) 2.73 (d, J=6.95 Hz, 2H) 3.81 (s, 3H) 7.05(dd, J=8.42, 1.83 Hz, 1H) 7.09 (d, J=1.83 Hz, 1H) 7.38 (d, J=8.42 Hz,1H) 7.55 (d, J=10.98 Hz, 1H) 8.06 (s, 1H) 8.30 (s, 1H) 8.56 (br. s., 1H)9.73 (br. s., 1H).

Compound 167: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 2.30 (s, 3H) 2.49 (s, 3H)6.91 (t, J=6.95 Hz, 1H) 7.03 (d, J=7.32 Hz, 1H) 7.46 (s, 1H) 7.54 (d,J=7.32 Hz, 1H) 7.60 (d, J=8.78 Hz, 1H) 7.68 (t, J=7.68 Hz, 1H) 7.76 (t,J=7.68 Hz, 1H) 7.81 (dd, J=8.78, 2.56 Hz, 1H) 7.85-7.93 (m, 2H) 8.65 (d,J=2.56 Hz, 1H) 8.77 (s, 1H).

Compound 173: ¹H NMR (360 MHz, CHLOROFORM-d) δ ppm 2.44 (s, 3H) 2.57 (s,3H) 6.82 (t, J=7.14 Hz, 1H) 6.95 (d, J=6.95 Hz, 1H) 7.31-7.42 (m, 3H)7.44 (s, 1H) 7.48-7.62 (m, 4H) 7.69 (dd, J=8.42, 2.56 Hz, 1H) 8.64 (d,J=2.56 Hz, 1H).

Compound 186: ¹H NMR (360 MHz, CHLOROFORM-d) δ ppm 2.52 (s, 3H) 3.94 (s,3H) 3.95 (s, 3H) 6.90 (s, 1H) 6.92 (d, J=2.20 Hz, 1H) 6.98 (dd, J=8.42,2.20 Hz, 1 H) 7.27-7.33 (m, 3H) 7.68 (d, J=8.42 Hz, 1H) 7.79 (dd,J=8.23, 5.31 Hz, 2H) 8.45 (s, 1H) 8.61 (s, 1H).

Compound 187: ¹H NMR (400 MHz, DMSO-d₆) δ ppm 2.49 (s, 3H), 3.88 (s,3H), 7.10 (d, J=5.6 Hz, 1H), 7.26 (d, J=3.5 Hz, 1H), 7.33-7.38 (m, 2H),7.44 (t, J=8.8 Hz, 2H), 7.66 (t, J=8.5 Hz, 1H), 7.98 (dd, J=8.7, 5.5 Hz,2H), 8.15 (d, J=5.5 Hz, 1H), 9.48 (s, 1H).

Compound 190: ¹H NMR (360 MHz, CHLOROFORM-d) δ ppm 1.35 (d, J=6.95 Hz,6H) 2.53 (s, 3H) 3.10 (spt, J=6.95 Hz, 1H) 3.93 (s, 3H) 3.96 (s, 3H)6.96 (d, J=1.83 Hz, 1H) 7.00 (dd, J=8.05, 1.83 Hz, 1H) 7.04 (s, 1H) 7.25(t, J=8.60 Hz, 2H) 7.32 (s, 1H) 7.35 (s, 1H) 7.73 (d, J=8.05 Hz, 1H)7.78 (dd, J=8.60, 5.31 Hz, 2H).

Compound 191: ¹H NMR (360 MHz, CHLOROFORM-d) δ ppm 1.34 (d, J=6.95 Hz,6H) 2.58 (s, 3H) 3.09 (spt, J=6.95 Hz, 1H) 3.93 (s, 3H) 6.93 (s, 1H)7.25 (t, J=8.42 Hz, 2H) 7.31 (s, 1H) 7.48 (s, 1H) 7.63 (d, J=8.42 Hz,1H) 7.70 (dd, J=8.42, 2.56 Hz, 1H) 7.78 (dd, J=8.42, 5.85 Hz, 2H) 8.70(d, J=2.56 Hz, 1H).

Compound 194: ¹H NMR (360 MHz, CHLOROFORM-d) δ ppm 2.44 (s, 3H) 2.60 (s,3H) 4.11 (s, 3H) 6.61 (d, J=8.05 Hz, 1H) 6.90 (t, J=7.14 Hz, 1H)7.32-7.43 (m, 4H) 7.50-7.61 (m, 3H) 7.63 (d, J=8.05 Hz, 1H) 8.07 (s, 1H)8.23 (d, J=6.95 Hz, 1H) 8.49 (d, J=5.49 Hz, 1H).

Compound 195: ¹H NMR (360 MHz, DMSO-d₆) δ ppm 2.47 (s, 3H), 2.49 (s,3H), 3.95 (s, 3H), 6.79 (s, 1H), 7.15 (dd, J=8.3, 2.0 Hz, 1H), 7.24 (d,J=2.0 Hz, 1H), 7.33 (s, 1H), 7.71 (d, J=8.4 Hz, 1H), 7.97 (s, 1H), 10.02(s, 1H).

Pharmacology A) Screening of the Compounds of the Invention forγ-Secretase-Modulating Activity A1) Method 1

Screening was carried out using SKNBE2 cells carrying the APP 695-wildtype, grown in Dulbecco's Modified Eagle's Medium/Nutrient mixture F-12(DMEM/NUT-mix F-12) (HAM) provided by Gibco (cat no. 31330-38)containing 5% Serum/Fe supplemented with 1% non-essential amino acids.Cells were grown to near confluency.

The screening was performed using the assay as described in Citron et al(1997) Nature Medicine 3: 67. Briefly, cells were plated in a 96-wellplate at about 10⁵ cells/ml one day prior to addition of compounds.Compounds were added to the cells in Ultraculture (Lonza, BE12-725F)supplemented with 1% glutamine (Invitrogen, 25030-024) for 18 hours. Themedia were assayed by two sandwich ELISAs, for Aβ42 and Aβtotal.Toxicity of the compounds was assayed by WST-1 cell proliferationreagent (Roche, 1 644 807) according to the manufacturer's protocol.

To quantify the amount of Aβ42 in the cell supernatant, commerciallyavailable Enzyme-Linked-Immunosorbent-Assay (ELISA) kits were used(Innotest® β-Amyloid₍₁₋₄₂₎, Innogenetics N.V., Ghent, Belgium). The Aβ42ELISA was performed essentially according to the manufacturer'sprotocol. Briefly, the standards (dilutions of synthetic Aβ1-42) wereprepared in polypropylene Eppendorf with final concentrations of 8000down to 3.9 pg/ml (1/2 dilution step). Samples, standards and blanks(100 μl) were added to the anti-Aβ42-coated plate supplied with the kit(the capture antibody selectively recognizes the C-terminal end of theantigen). The plate was allowed to incubate 3 h at 25° C. in order toallow formation of the antibody-amyloid complex. Following thisincubation and subsequent wash steps a selective anti-Aβ-antibodyconjugate (biotinylated 3D6) was added and incubated for a minimum of 1hour in order to allow formation of theantibody-Amyloid-antibody-complex. After incubation and appropriate washsteps, a Streptavidine-Peroxidase-Conjugate was added, followed 30minutes later by an addition of 3,3′,5,5′-tetramethylbenzidine(TMB)/peroxide mixture, resulting in the conversion of the substrateinto a coloured product. This reaction was stopped by the addition ofsulfuric acid (0.9 N) and the colour intensity was measured by means ofphotometry with an ELISA-reader with a 450 nm filter.

To quantify the amount of Aβtotal in the cell supernatant, samples andstandards were added to a 6E10-coated plate. The plate was allowed toincubate overnight at 4° C. in order to allow formation of theantibody-amyloid complex. Following this incubation and subsequent washsteps a selective anti-AB-antibody conjugate (biotinylated 4G8) wasadded and incubated for a minimum of 1 hour in order to allow formationof the antibody-Amyloid-antibody-complex. After incubation andappropriate wash steps, a Streptavidine-Peroxidase-Conjugate was added,followed 30 minutes later by an addition of Quanta Blu fluorogenicperoxidase substrate according to the manufacturer's instructions(Pierce Corp., Rockford, Il.).

To obtain the values reported in Table 7a, the sigmoidal dose responsecurves were analysed by computerised curve-fitting, with percent ofinhibition plotted against compound concentration. A 4-parameterequation (model 205) in XLfit was used to determine the IC₅₀. The topand the bottom of the curve were fixed to 100 and 0, respectively, andthe hill slope was fixed to 1. The IC₅₀ represents the concentration ofa compound that is required for inhibiting a biological effect by 50%(Here, it is the concentration where AB peptide level is reduced by50%).

The IC₅₀ values are shown in Table 7a:

IC₅₀ IC₅₀ Co. Aβ42 Aβtotal No. (μM) (μM) 1 0.203 >5 2 0.022 >3 30.196 >10 4 0.067 >3 5 0.063 >3 6 0.077 >3 7 0.334 >10 8 0.275 >5 90.399 >3 10 0.358 n.d. 11 0.072 n.d. 12 0.023 >1 13 0.065 >3 14 0.109 >316 0.011 >3 19 0.049 >3 20 0.013 >1 22 0.123 >3 23 0.417 >3 24 0.056 >325 0.024 >3 29 0.029 >3 31 0.076 >3 32 0.235 >10 33 0.102 >10 340.016 >3 35 0.090 >3 36 0.328 >3 38 0.562 >10 39 0.053 >3 40 0.011 >3 420.096 >3 44 0.140 >10 45 0.848 >30 47 0.486 >3 49 0.021 >3 50 0.038 >3

To obtain the values reported in Table 7b, the data were calculated aspercentage of the maximum amount of amyloid Beta 42 measured in theabsence of the test compound. The sigmoidal dose response curves wereanalyzed using non-linear regression analysis with percentage of thecontrol plotted against the log concentration of the compound. A4-parameter equation was used to determine the IC₅₀. The values reportedin Table 7b are averaged IC₅₀ values.

The IC₅₀ values are shown in Table 7b (n.d. means not determined):

IC₅₀ IC₅₀ Co. Aβ42 Aβtotal No. (μM) (μM) 66 >3 n.d. 179 >3 >3 180 >3 >3181 >3 >3 55 3.02 >10 190 0.005 >3 105 0.007 >3 16 0.009 >3 21 0.009 >362 0.009 >3 173 0.009 >3 17 >10 >3 106 0.010 >1 174 0.010 >3 63 0.011 >340 0.012 >3 192 0.013 >3 20 0.017 >1 107 0.018 >3 86 0.019 >3 1930.019 >3 2 0.020 >3 49 0.020 >3 50 0.020 >3 121 0.020 >3 171 0.020 >3 120.021 >3 97 0.021 >3 167 0.021 >3 25 0.023 >3 95 0.023 >3 152 0.023 >3102 0.024 >3 119 0.025 >3 162 0.025 >10 123 0.026 >1 19 0.028 >3 290.028 >3 79 0.028 >3 112 0.028 >1 56 0.030 >3 125 0.033 n.d. 1750.033 >3 18 0.035 >3 30 0.035 >10 103 0.036 >3 82 0.037 >3 122 0.038 >3176 0.041 >3 77 0.043 >3 169 0.045 >3 149 0.047 >3 39 0.051 >3 1240.051 >3 24 0.055 >3 83 0.059 >3 4 0.063 >3 13 0.063 >3 67 0.065 >3 850.066 >3 88 0.066 >10 64 0.068 >3 11 0.071 n.d. 98 0.071 >3 51 0.072 >359 0.072 >3 114 0.072 >3 70 0.076 >3 5 0.078 >3 31 0.078 >3 1570.081 >10 65 0.083 >3 94 0.083 >3 110 0.083 >3 118 0.083 >3 147 0.085n.d. 178 0.085 >3 35 0.089 n.d. 15 0.100 >3 6 0.102 >3 14 0.105 >3 1770.105 >3 28 0.110 >3 34 0.110 >3 46 0.110 >3 22 0.115 >3 42 0.123 >3 410.126 >3 48 0.132 >10 108 0.132 >10 202 0.135 >3 44 0.138 >10 1600.138 >3 33 0.141 >10 109 0.145 2.82 186 0.162 >10 52 0.166 >3 145 0.166n.d. 3 0.178 >10 43 0.182 >10 76 0.182 >3 195 0.195 >10 1 0.200 >5 360.204 >3 126 0.214 n.d. 9 0.240 >3 58 0.240 >10 199 0.240 >30 1630.245 >10 87 0.251 >10 141 0.251 >10 148 0.251 >10 78 0.275 >3 80.282 >5 32 0.282 >10 165 0.288 >30 200 0.295 >3 7 0.302 >10 1200.324 >3 111 0.339 >10 10 0.355 n.d. 146 0.355 >30 37 0.380 >3 155 0.38914.79 23 0.398 >3 150 0.437 8.13 47 0.447 >3 142 0.468 >10 144 0.46813.80 54 0.490 >10 38 0.550 >10 27 0.676 >3 196 0.676 >3 117 0.724 >10166 0.741 >3 45 0.813 >30 26 0.871 >30 72 0.955 >3 61 1.071 >3 571.072 >10 90 1.096 >3 75 1.148 >3 153 1.318 >3 164 1.413 9.33 91 1.44566.07 93 1.862 n.d. 53 1.905 >10 71 1.950 >3 154 2.042 >3 172 2.089 >399 2.188 n.d. 100 2.239 25.12 92 2.570 >3 60 3.020 >3 170 3.548 n.d. 1439.772 >30

A2) Method 2

Screening was carried out using SKNBE2 cells carrying the APP 695-wildtype, grown in Dulbecco's Modified Eagle's Medium/Nutrient mixture F-12(DMEM/NUT-mix F-12) (HAM) provided by Invitrogen (cat no. 10371-029)containing 5% Serum/Fe supplemented with 1% non-essential amino acids,1-glutamine 2 mM, Hepes 15 mM, penicillin 50 U/ml (units/ml) enstreptomycin 50 μg/ml. Cells were grown to near confluency.

The screening was performed using a modification of the assay asdescribed in Citron et al (1997) Nature Medicine 3: 67. Briefly, cellswere plated in a 384-well plate at 10⁴ cells/well in Ultraculture(Lonza, BE12-725F) supplemented with 1% glutamine (Invitrogen,25030-024), 1% non-essential amino acid (NEAA), penicillin 50 U/ml enstreptomycin 50 μg/ml in the presence of test compound at different testconcentrations. The cell/compound mixture was incubated overnight at 37°C., 5% CO₂, The next day the media were assayed by two sandwichimmuno-assays, for Aβ42 and Aβtotal.

Aβtotal and Aβ42 concentrations were quantified in the cell supernatantusing the Aphalisa technology (Perkin Elmer). Alphalisa is a sandwichassay using biotinylated antibody attached to streptavidin coateddonorbeads and antibody conjugated to acceptor beads. In the presence ofantigen, the beads come into close proximity. The excitation of thedonor beads provokes the release of singlet oxygen molecules thattrigger a cascade of energy transfer in the acceptor beads, resulting inlight emission. To quantify the amount of Aβ42 in the cell supernatant,monoclonal antibody specific to the C-terminus of Aβ42 (JRF/cAβ42/26)was coupled to the receptor beads and biotinylated antibody specific tothe N-terminus of AB (JRF/AβN/25) was used to react with the donorbeads. To quantify the amount of Aβtotal in the cell supernatant,monoclonal antibody specific to the N-terminus of AB (JRF/AβN/25) wascoupled to the receptor beads and biotinylated antibody specific to themid region of AB (biotinylated 4G8) was used to react with the donorbeads.

To obtain the values reported in Table 7c, the data were calculated aspercentage of the maximum amount of amyloid Beta 42 measured in theabsence of the test compound. The sigmoidal dose response curves wereanalyzed using non-linear regression analysis with percentage of thecontrol plotted against the log concentration of the compound. A4-parameter equation was used to determine the IC₅₀.

The IC₅₀ values are shown in Table 7c:

IC₅₀ IC₅₀ Co. Aβ42 Aβtotal No. (μM) (μM) 10 1.738 >10 11 0.363 >10 120.035 7.76 16 0.016 8.71 17 0.166 >10 18 0.020 6.46 26 0.191 >10 350.214 >10 49 0.040 >10 50 0.072 >10 65 0.117 >10 66 >10 >10 68 0.018 >1069 0.022 >10 73 0.141 5.62 74 7.413 4.47 79 0.076 >10 80 0.049 >10 810.095 >10 82 0.049 >10 84 0.112 >10 85 0.363 >10 86 0.052 >10 87 0.2889.12 88 0.058 8.91 89 0.019 9.77 93 2.754 >10 96 0.245 >10 99 7.943 >10101 0.046 >10 104 0.501 >10 105 0.014 >10 106 0.024 >10 107 0.025 >10111 0.204 >10 113 0.066 4.90 116 0.072 >10 119 0.043 >10 125 0.195 >10126 0.741 n.d. 127 0.044 3.63 128 0.039 9.12 129 0.017 5.25 1300.030 >10 131 0.028 >10 132 0.123 6.31 133 0.191 >10 135 0.347 >10 1360.112 >10 137 0.117 >10 138 0.049 7.08 139 0.060 6.61 140 0.759 >10 1451.047 6.31 147 0.468 n.d. 156 0.042 8.91 158 1.862 >10 159 0.269 >10 1610.155 >10 162 0.032 >10 163 0.158 >10 164 1.318 6.76 167 0.018 >10 1680.051 >10 170 7.413 >10 171 0.038 >10 172 0.661 >10 173 0.007 >10 1740.022 >10 182 0.162 7.76 183 0.083 8.71 186 0.041 >10 187 0.062 >10188 >10 >10 189 2.399 >10 190 0.010 >10 191 0.012 >10 194 0.017 ~6.76195 0.282 >10 197 0.550 >10 198 1.175 6.76 201 0.045 >10 202 0.245 8.51

B) Demonstration of In Vivo Efficacy

Aβ42 lowering agents of the invention can be used to treat AD in mammalssuch as humans or alternatively demonstrating efficacy in animal modelssuch as, but not limited to, the mouse, rat, or guinea pig. The mammalmay not be diagnosed with AD, or may not have a genetic predispositionfor AD, but may be transgenic such that it overproduces and eventuallydeposits Aβ in a manner similar to that seen in humans afflicted withAD.

Aβ42 lowering agents can be administered in any standard form using anystandard method. For example, but not limited to, Aβ42 lowering agentscan be in the form of liquid, tablets or capsules that are taken orallyor by injection. Aβ42 lowering agents can be administered at any dosethat is sufficient to significantly reduce levels of Aβ42 in the blood,blood plasma, serum, cerebrospinal fluid (CSF), or brain.

To determine whether acute administration of an Aβ42 lowering agentwould reduce Aβ42 levels in vivo, non-transgenic rodents, e.g. mice orrats were used. Alternatively, two to three month old Tg2576 miceexpressing APP695 containing the “Swedish” variant can be used or atransgenic mouse model developed by Dr. Fred Van Leuven (K. U. Leuven,Belgium) and co-workers, with neuron-specific expression of a clinicalmutant of the human amyloid precursor protein [V717I] (Moechars et al.,1999 J. Biol. Chem. 274, 6483). Young transgenic mice have high levelsof Aβ in the brain but no detectable Aβ deposition. At approximately 6-8months of age, the transgenic mice start to display spontaneous,progressive accumulation of β-amyloid (Aβ) in the brain, eventuallyresulting in amyloid plaques within the subiculum, hippocampus andcortex. Animals treated with the Aβ42 lowering agent were examined andcompared to those untreated or treated with vehicle and brain levels ofsoluble Aβ42 and total Aβ would be quantitated by standard techniques,for example, using ELISA. Treatment periods varied from hours to daysand were adjusted based on the results of the Aβ42 lowering once a timecourse of onset of effect could be established.

A typical protocol for measuring Aβ42 lowering in vivo is shown but itis only one of many variations that could be used to optimize the levelsof detectable Aβ. For example, Aβ42 lowering compounds were formulatedin 20% of Captisol® (a sulfobutyl ether of β-cyclodextrin) in water or20% hydroxypropyl βcyclodextrin. The Aβ42 lowering agents wereadministered as a single oral dose or by any acceptable route ofadministration to overnight fasted animals. After four hours, theanimals were sacrificed and Aβ42 levels were analysed.

Blood was collected by decapitation and exsanguinations in EDTA-treatedcollection tubes. Blood was centrifuged at 1900 g for 10 min at 4° C.and the plasma recovered and flash frozen for later analysis. The brainwas removed from the cranium and hindbrain. The cerebellum was removedand the left and right hemisphere were separated. The left hemispherewas stored at −18° C. for quantitative analysis of test compound levels.The right hemisphere was rinsed with phosphate-buffered saline (PBS)buffer and immediately frozen on dry ice and stored at −80° C. untilhomogenization for biochemical assays.

Mouse brains were resuspended in 10 volumes of 0.4% DEA(diethylamine)/50 mM NaCl pH 10 (for non-transgenic animals) or 0.1%3-[(3-cholamidopropyl)-dimethyl-ammonio]-1-propanesulfonate (CHAPS) intris buffered saline (TBS) (for transgenic animals) containing proteaseinhibitors (Roche-11873580001 or 04693159000 per gram of tissue, e.g.for 0.158 g brain, add 1.58 ml of 0.4% DEA. All samples were sonicatedfor 30 sec on ice at 20% power output (pulse mode). Homogenates werecentrifuged at 221.300×g for 50 min. The resulting high speedsupernatants were then transferred to fresh tubes and were optionallyfurther purified before the next step. A portion of the supernatant wasneutralized with 10% 0.5 M Tris-HCl and this was used to quantifyAβtotal.

The obtained supernatants were purified with Water Oasis HLB reversephase columns (Waters Corp., Milford, Mass.) to remove non-specificimmunoreactive material from the brain lysates prior subsequent Aβdetection. Using a vacuum manifold, all solutions were passed throughthe columns at a rate of approximately 1 ml per minute, so the vacuumpressure was adjusted accordingly throughout the procedure. Columns werepreconditioned with 1 ml of 100% MeOH, before equilibration with 1 ml ofH₂O. Non-neutralized brain lysates were loaded onto the columns. Theloaded samples were then washed twice with the first wash performed with1 ml of 5% MeOH, and the second wash with 1 ml of 30% MeOH. Finally, theAβ was eluted from the columns and into 100×30 mm glass tubes, with asolution of 90% MeOH with 2% NH₄OH. The eluate was then transferred into1.5 ml tubes and concentrated in a speed-vac concentrator on high heatfor about 1.5-2 h at 70° C. The concentrated Aβ was then resuspended inUltraCULTURE General Purpose Serum-Free Medium (Cambrex Corp.,Walkersville, Md.) plus Protease Inhibitors added according to themanufacturers recommendation.

To quantify the amount of Aβ42 in the soluble fraction of the brainhomogenates, commercially available Enzyme-Linked-Immunosorbent-Assay(ELISA) kits were used (e.g. Innotest® β-Amyloid₍₁₋₄₂₎, InnogeneticsN.V., Ghent, Belgium). The Aβ42 ELISA was performed using the plateprovided with the kit only. Briefly, the standards (a dilution ofsynthetic Aβ1-42) were prepared in 1.5 ml Eppendorf tube inUltraculture, with final concentrations ranging from 25000 to 1.5 pg/ml.Samples, standards and blanks (60 μl) were added to the anti-Aβ42-coatedplate (the capture antibody selectively recognizes the C-terminal end ofthe antigen). The plate was allowed to incubate overnight at 4° C. inorder to allow formation of the antibody-amyloid complex. Following thisincubation and subsequent wash steps a selective anti-Aβ-antibodyconjugate (biotinylated detection antibody, e.g., biotinylated 4G8(Covance Research Products, Dedham, Mass.) was added and incubated for aminimum of 1 h in order to allow formation of theantibody-Amyloid-antibody-complex. After incubation and appropriate washsteps, a Streptavidine-Peroxidase-Conjugate was added, followed 50 minlater by an addition of Quanta Blu fluorogenic peroxidase substrateaccording to the manufacturer's instructions (Pierce Corp., Rockford,Il.). A kinetic reading was performed every 5 minutes for 30 min(excitation 320/emission 420). To quantify the amount of Aβtotal in thesoluble fraction of the brain homogenates, samples and standards wereadded to JRF/rAβ/2-coated plate. The plate was allowed to incubateovernight at 4° C. in order to allow formation of the antibody-amyloidcomplex. The ELISA was then performed as for Aβ42 detection.

In this model at least 20% Aβ42 lowering compared to untreated animalswould be advantageous.

The results are shown in Table 8:

Co. Aβ42 Aβtotal No. (% Ctrl)_Mean (% Ctrl)_Mean 195 89 99 2 95 104 104110 97 186 52 82 97 71 102 157 77 100 95 47 88 10 106 109 11 91 99 12 56101 13 87 105 14 78 91 16 58 95 17 106 109 18 54 94 25 76 96 30 96 92 3191 102 40 77 102 41 93 87 101 77 92 170 99 99 105 104 96 181 104 105 14187 89 63 56 90 59 97 95 58 89 105 54 101 104

C) Effect on the Notch-Processing Activity of the γ-Secretase-ComplexNotch Cell-Free Assay

The Notch transmembrane domain is cleaved by gamma secretase to releaseNotch Intracellular C-terminal Domain (NICD). Notch is a signalingprotein which plays a crucial role in developmental processes, and thuscompounds are preferred which do not show an effect on theNotch-processing activity of the γ-secretase-complex.

To monitor the effect of compounds on NICD production, a recombinantNotch substrate (N99) was prepared. The Notch substrate, comprised ofmouse Notch fragment (V1711-E1809), an N-terminal methionine and aC-terminal FLAG sequence (DYDDDDK), was expressed in E. coli andpurified on a column containing an anti-FLAG M2 affinity matrix.

A typical Notch cell-free assay consisted of 0.3-0.5 μM Notch substrate,an enriched preparation of gamma secretase and 1 μM of a test compound(compounds 16, 18 and 106 of the present invention). Controls included agamma secretase inhibitor (GSI), such as(2S)—N-[2-(3,5-difluorophenyl)acetyl]-L-alanyl-2-phenyl-glycine1,1-dimethylethyl ester (DAPT) or(2S)-2-hydroxy-3-methyl-N-[(1S)-1-methyl-2-oxo-2-[[(1S)-2,3,4,5-tetrahydro-3-methyl-2-oxo-1H-3-benzazepin-1-yl]amino]ethyl]-butanamide(Semagacestat), and DMSO, the final concentration of DMSO being 1%.Recombinant Notch substrate was pre-treated with 17 μM DTT(1,4-dithiothreitol) and 0.02% SDS (Sodium Dodecyl Sulfate) and heatedat 65° C. for 10 min. The mixture of substrate, gamma secretase andcompound/DMSO was incubated at 37° C. for 6 to 22 hours (h). Six-hourincubation was sufficient to produce the maximal amount of NICD and thecleaved product remained stable for an additional 16 h. Reactionproducts were processed for SDS PAGE (Sodium Dodecyl Sulfate-PolyAcrylamide Gel Electrophoresis) and western blotting. Blots were probedwith an anti-Flag M2 antibody, followed by LI-COR infrared secondaryantibody, and analyzed with the Odyssey Infrared Imaging System (LI-COR®Biosciences).

In the cell-free Notch assay, no test compounds (compounds 16, 18 and106 of the present invention) inhibited the cleavage of C99 by gammasecretase, whereas the production of NICD was blocked by the control GSI(DAPT or Semagacestat). Thus it was demonstrated that compounds 16, 18and 106 of the present invention did not show an effect on theNotch-processing activity of the γ-secretase-complex (production ofNICD).

Notch Cell-Based Assay

The Notch cell-based assay was based on the interaction of Notch and itsligand in a co-culture system and utilized the Dual-Glo Luciferase AssaySystem (Promega) to monitor NICD production. Two stable cell lines,N2-CHO and DL-CHO, were established to express full-length mouse Notch2and Delta respectively. Cells that expressed mouse Notch were alsotransfected with two plasmids, pTP1-Luc and pCMV-RLuc, to expressfirefly and Renilla luciferase. Expression of firefly luciferase wasunder the control of TP 1 promoter that responded to NICD activation.The CMV promoter that drove the expression of Renilla luciferase did notrespond to NICD activation and therefore was used to control fortransfection efficiency and compound toxicity.

N2-CHO cells were seeded at 1×10⁵/well in 24-well plates the day beforetransfection. On the second day, cells were double transfected with 3ng/well pTP1-Luc (expressing firefly luciferase) and 0.3 ng/wellpCMV-RLuc (expressing Renilla luciferase). After 6 h incubation,transfected N2-CHO cells were washed and DL-CHO cells (2×10⁵ cells/well)were added.

Compounds were pre-mixed with DL-CHO cell suspension in a five-pointcurve. Typically, compound treatment was performed in duplicate with aserial 1:10 dilution (3 μM-0.3 nM) in DMSO. The final concentration ofDMSO in a given culture was 1%. Controls included non-transfected cellsand transfected cells treated with a GSI or DMSO only. Luciferase assayswere performed after 16 h co-culture and compound treatment.

The luciferase assay was carried out according to manufacture'sinstructions. Briefly, cells were washed with PBS (Phosphate BufferedSaline), lysed with Passive Lysis Buffer (Promega), and incubated atroom temperature for 20 min. Lysates were mixed with Dual-Glo LuciferaseReagent and the firefly luciferase activity was measured by reading theluminescence signal in the EnVision 2101 Multilabel reader. Dual-GloStop & Glo Reagent was then added to each well and the Renillaluciferase signal was measured.

The results of the Notch cell-based assay were in agreement with thosein the cell-free NICD assay. On the basis of luciferase assay readouts,the average IC₅₀ values of DAPT and Semagacestat from the Notchcell-based assay were 45 nM and 40 nM respectively, whereas compound 18of the present invention was found to be non-inhibitory.

D. Composition Examples

“Active ingredient” (a.i.) as used throughout these examples relates toa compound of formula (I), including any stereochemically isomeric formthereof, a pharmaceutically acceptable salt thereof or a solvatethereof; in particular to any one of the exemplified compounds.

Typical examples of recipes for the formulation of the invention are asfollows:

1. Tablets

Active ingredient 5 to 50 mg Di-calcium phosphate 20 mg Lactose 30 mgTalcum 10 mg Magnesium stearate 5 mg Potato starch ad 200 mg

2. Suspension

An aqueous suspension is prepared for oral administration so that eachmilliliter contains 1 to 5 mg of active ingredient, 50 mg of sodiumcarboxymethyl cellulose, 1 mg of sodium benzoate, 500 mg of sorbitol andwater ad 1 ml.

3. Injectable

A parenteral composition is prepared by stirring 1.5% (weight/volume) ofactive ingredient in 0.9% NaCl solution or in 10% by volume propyleneglycol in water.

4. Ointment

Active ingredient 5 to 1000 mg Stearyl alcohol 3 g Lanoline 5 g Whitepetroleum 15 g Water ad 100 g

In this Example, active ingredient can be replaced with the same amountof any of the compounds according to the present invention, inparticular by the same amount of any of the exemplified compounds.

Reasonable variations are not to be regarded as a departure from thescope of the invention. It will be obvious that the thus describedinvention may be varied in many ways by those skilled in the art.

1. A compound of formula (I)

or a stereoisomeric form thereof, wherein Het¹ is a 5-membered or6-membered aromatic heterocycle, having formula (a-1), (a-2), (a-3),(a-4) or (a-5):

R⁰ is H or C₁₋₄alkyl; R¹ is H, C₁₋₄alkyl or C₁₋₄alkyloxyC₁₋₄alkyl; R² isC₁₋₄alkyl; X is O or S; G¹ is CH or N; G² is CH, N or C substituted withC₁₋₄alkyl; provided that G¹ and G² are not simultaneously N; G³ is CH orN; R^(10a) and R^(10b) each independently are hydrogen or C₁₋₄alkyl; A¹is CR³ or N; wherein R³ is H, halo or C₁₋₄alkyloxy; A², A³ and A⁴ eachindependently are CH, CF or N; provided that maximum two of A¹, A², A³and A⁴ are N; Het² is a 9-membered bicyclic aromatic heterocycle, havingformula (b-2):

Y¹ is N; Y² is CR^(4b); Y³ is CH; R^(4b) is H; H halo; C₁₋₄alkyloxy;cyano; cycloC₃₋₇alkyl; or C₁₋₄alkyl optionally substituted with one ormore substituents each independently selected from the group consistingof halo and amino; R^(6b) is C₂₋₆alkyl substituted with one or more halosubstituents; C₁₋₆alkyl optionally substituted with one or moresubstituents each independently selected from the group consisting ofpiperidinyl, Ar, C₁₋₆alkyloxy, tetrahydropyranyl, cycloC₃₋₇alkyloxy, andcycloC₃₋₇alkyl; cycloC₃₋₇alkyl; cycloC₃₋₇alkyl substituted with one ormore phenyl substituents optionally substituted with one or more halosubstituents; piperidinyl; morpholinyl; pyrrolidinyl; NR⁸R⁹;tetrahydropyranyl; O—Ar; C₁₋₆alkyloxy; C₁₋₆alkylthio; Ar; CH₂—O—Ar;S—Ar; NCH₃—Ar; or NH—Ar; wherein each piperidinyl, morpholinyl, andpyrrolidinyl may optionally be substituted with one or more substituentseach independently selected from the group consisting of C₁₋₄alkyl,C₂₋₆alkenyl, C₁₋₄alkylcarbonyl, halo, and C₁₋₄alkyloxycarbonyl; whereineach Ar independently is phenyl optionally substituted with one or moresubstituents each independently selected from the group consisting ofhalo, C₁₋₄alkyloxy, cyano, NR⁸R⁹, morpholinyl, C₁₋₄alkyl, and C₁₋₄alkylsubstituted with one or more halo substituents; pyridinyl optionallysubstituted with one or more substituents each independently selectedfrom the group consisting of halo, C₁₋₄alkyloxy, cyano, C₁₋₄alkyl, andC₁₋₄alkyl substituted with one or more halo substituents; oxazolyloptionally substituted with one or more C₁₋₄alkyl substituents; orthienyl optionally substituted with one or more halo substituents; eachR⁸ independently is H or C₁₋₄alkyl; each R⁹ independently is H orC₁₋₄alkyl; R⁷ is H, C₁₋₆alkyl optionally substituted with one or moresubstituents each independently selected from the group consisting ofhalo, phenyl, and C₁₋₄alkyloxy; or a pharmaceutically acceptableaddition salt or a solvate thereof.
 2. The compound according to claim 1or a stereoisomeric form thereof, wherein Het¹ is a 5-membered aromaticheterocycle, having formula (a-1), (a-2), (a-3) or (a-4); R⁰ is H orC₁₋₄alkyl; R¹ is H or C₁₋₄alkyl; R² is C₁₋₄alkyl; X is O or S; G¹ is CHor N; G² is CH, N or C substituted with C₁₋₄alkyl; provided that G¹ andG² are not simultaneously N; G³ is CH or N; A¹ is CR³ or N; wherein R³is H, halo or C₁₋₄alkyloxy; A², A³ and A⁴ each independently are CH, CFor N; provided that maximum two of A¹, A², A³ and A⁴ are N; Rob is H; Hhalo; C₁₋₄alkyloxy; cyano; or C₁₋₄alkyl optionally substituted with oneor more halo substituents; R^(6b) is C₂₋₆alkyl substituted with one ormore halo substituents; C₁₋₆alkyl optionally substituted with one ormore substituents each independently selected from the group consistingof piperidinyl, Ar, C₁₋₆alkyloxy, tetrahydropyranyl, cycloC₃₋₇alkyloxy,and cycloC₃₋₇alkyl; cycloC₃₋₇alkyl; piperidinyl; morpholinyl;pyrrolidinyl; NR⁸R⁹; tetrahydropyranyl; O—Ar; C₁₋₆alkyloxy;C₁₋₆alkylthio; Ar; CH₂—O—Ar; S—Ar; NCH₃—Ar or NH—Ar; wherein eachpiperidinyl, morpholinyl, and pyrrolidinyl may optionally be substitutedwith one or more substituents each independently selected from the groupconsisting of C₁₋₄alkyl, C₂₋₆alkenyl, C₁₋₄alkylcarbonyl, halo, andC₁₋₄alkyloxycarbonyl; wherein each Ar independently is phenyl optionallysubstituted with one or more substituents each independently selectedfrom the group consisting of halo, C₁₋₄alkyloxy, cyano, NR⁸R⁹,morpholinyl, C₁₋₄alkyl, and C₁₋₄alkyl substituted with one or more halosubstituents; or pyridinyl optionally substituted with one or moresubstituents each independently selected from the group consisting ofhalo, C₁₋₄alkyloxy, cyano, C₁₋₄alkyl, and C₁₋₄alkyl substituted with oneor more halo substituents; each R⁸ independently is H or C₁₋₄alkyl; eachR⁹ independently is H or C₁₋₄alkyl; R⁷ is H, C₁₋₆alkyl optionallysubstituted with one or more substituents each independently selectedfrom the group consisting of halo, phenyl, and C₁₋₄alkyloxy; or apharmaceutically acceptable addition salt or a solvate thereof.
 3. Thecompound according to claim 1 or a stereoisomeric form thereof, whereinA¹ is CR³ or N; wherein R³ is H, halo or C₁₋₄alkyloxy; A², A³ and A⁴each independently are CH or N; provided that maximum two of A¹, A², A³and A⁴ are N; R^(6b) is C₂₋₆alkyl substituted with one or more halosubstituents; C₁₋₆alkyl optionally substituted with one or moresubstituents each independently selected from the group consisting ofAr, C₁₋₆alkyloxy, tetrahydropyranyl, and cycloC₃₋₇alkyl; cycloC₃₋₇alkyl;cycloC₃₋₇alkyl substituted with one phenyl optionally substituted withone or more halo substituents; unsubstituted pyrrolidinyl; NR⁸R⁹;tetrahydropyranyl; Ar; or CH₂—O—Ar; each Ar independently is phenyloptionally substituted with one or more substituents each independentlyselected from the group consisting of halo, C₁₋₄alkyloxy, C₁₋₄alkyl, andC₁₋₄alkyl substituted with one or more halo substituents; oxazolyloptionally substituted with one or more C₁₋₄alkyl substituents; orthienyl optionally substituted with one or more halo substituents; eachR⁸ independently is C₁₋₄alkyl; each R⁹ independently is C₁₋₄alkyl; R² isC₁₋₆alkyl optionally substituted with one or more C₁₋₄alkyloxysubstituents; or a pharmaceutically acceptable addition salt or asolvate thereof.
 4. The compound according to claim 1 or astereoisomeric form thereof, wherein Het¹ is a 5-membered aromaticheterocycle, having formula (a-1), (a-2), (a-3) or (a-4); R⁰ is H orC₁₋₄alkyl; R¹ is H or C₁₋₄alkyl; R² is C₁₋₄alkyl; X is O or S; G¹ is CH;G² is CH or C substituted with C₁₋₄alkyl; G³ is CH; A¹ is CR³ or N;wherein R³ is H, halo or C₁₋₄alkyloxy; A² is CH or N; A³ and A⁴ are CH;R^(4b) is H, halo or C₁₋₄alkyl optionally substituted with one or morehalo substituents; R^(6b) is Ar; C₂₋₆alkyl substituted with one or morehalo substituents; C₁₋₆alkyl optionally substituted with one or more Arsubstituents; or CH₂—O—Ar; wherein each Ar independently is phenyloptionally substituted with one or more substituents each independentlyselected from the group consisting of halo, C₁₋₄alkyloxy, C₁₋₄alkyl, andC₁₋₄alkyl substituted with one or more halo substituents; R⁷ isC₁₋₆alkyl optionally substituted with one or more C₁₋₄alkyloxysubstituents; or a pharmaceutically acceptable addition salt or asolvate thereof.
 5. The compound according to claim 1 or astereoisomeric form thereof, wherein Het¹ is a 5-membered or 6-memberedaromatic heterocycle, having formula (a-1) or (a-5); R⁰ is H orC₁₋₄alkyl; R¹ is H or C₁₋₄alkyl; X is O; R^(10a) and R^(10b) eachindependently are hydrogen or C₁₋₄alkyl; A¹ is CR³ or N; wherein R³ isC₁₋₄alkyloxy; A², A³ and A⁴ are CH; R^(4b) is H or C₁₋₄alkyloxy; R^(6b)is phenyl optionally substituted with one or more halo substituents; R⁷is C₁₋₆alkyl; or a pharmaceutically acceptable addition salt or asolvate thereof.
 6. The compound according to claim 5, wherein Het¹ hasformula (a-1).
 7. A pharmaceutical composition comprising apharmaceutically acceptable carrier and, as active ingredient, atherapeutically effective amount of a compound as defined in any one ofclaims 1 to
 6. 8. A method for the treatment or prevention of a diseaseor condition selected from Alzheimer's disease, traumatic brain injury,mild cognitive impairment, senility, dementia, dementia with Lewybodies, cerebral amyloid angiopathy, multi-infarct dementia, Down'ssyndrome, dementia associated with Parkinson's disease and dementiaassociated with beta-amyloid comprising administering to a subject acompound as defined in any one of claims 1 to
 6. 9. The method accordingto claim 8, wherein the disease is Alzheimer's disease.